Double free vulnerability in nsVCard.cpp in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.

Updated thunderbird packages that fix several security bugs are now available for Red Hat Enterprise Linux 4. 

This update has been rated as having critical security impact by the Red Hat Security Response Team. 

Mozilla Thunderbird is a standalone mail and newsgroup client. 

Users of Thunderbird are advised to upgrade to this update, which contains Thunderbird version 1.5.0.8 that corrects these issues. 


From Red Hat Security Advisory 2006:0735 :

Several flaws were found in the way Thunderbird processes certain malformed Javascript code.  A malicious HTML mail message could cause the execution of Javascript code in such a way that could cause Thunderbird to crash or execute arbitrary code as the user running Thunderbird.  (CVE-2006-5463, CVE-2006-5747, CVE-2006-5748)

Several flaws were found in the way Thunderbird renders HTML mail messages.  A malicious HTML mail message could cause the mail client to crash or possibly execute arbitrary code as the user running Thunderbird.  (CVE-2006-5464)

A flaw was found in the way Thunderbird verifies RSA signatures.  For RSA keys with exponent 3 it is possible for an attacker to forge a signature that would be incorrectly verified by the NSS library. Thunderbird as shipped trusts several root Certificate Authorities that use exponent 3.  An attacker could have created a carefully crafted SSL certificate which would be incorrectly trusted when their site was visited by a victim.  This flaw was previously thought to be fixed in Thunderbird 1.5.0.7, however Ulrich Kuehn discovered the fix was incomplete (CVE-2006-5462)


From Red Hat Security Advisory 2006:0677 :

Two flaws were found in the way Thunderbird processed certain regular expressions.  A malicious HTML email could cause a crash or possibly execute arbitrary code as the user running Thunderbird.  (CVE-2006-4565, CVE-2006-4566)

A flaw was found in the Thunderbird auto-update verification system.  An attacker who has the ability to spoof a victim's DNS could get Firefox to download and install malicious code.  In order to exploit this issue an attacker would also need to get a victim to previously accept an unverifiable certificate.  (CVE-2006-4567)

A flaw was found in the handling of Javascript timed events.  A malicious HTML email could crash the browser or possibly execute arbitrary code as the user running Thunderbird.  (CVE-2006-4253)

Daniel Bleichenbacher recently described an implementation error in RSA signature verification.  For RSA keys with exponent 3 it is possible for an attacker to forge a signature that which would be incorrectly verified by the NSS library.  (CVE-2006-4340)

A flaw was found in Thunderbird that triggered when a HTML message contained a remote image pointing to a XBL script.  An attacker could have created a carefully crafted message which would execute Javascript if certain actions were performed on the email by the recipient, even if Javascript was disabled.  (CVE-2006-4570)

A number of flaws were found in Thunderbird.  A malicious HTML email could cause a crash or possibly execute arbitrary code as the user running Thunderbird.  (CVE-2006-4571)


From Red Hat Bug Fix Advisory 2006:0624 :

A problem was found in Thunderbird where starting the application from a graphical launcher (such as a menu item) did not work. 


From Red Hat Security Advisory 2006:0611 :

The Mozilla Foundation has discontinued support for the Mozilla Thunderbird 1.0 branch.  This update deprecates the Mozilla Thunderbird 1.0 branch in Red Hat Enterprise Linux 4 in favor of the supported Mozilla Thunderbird 1.5 branch. 

This update also resolves a number of outstanding Thunderbird security issues :

Several flaws were found in the way Thunderbird processed certain javascript actions.  A malicious mail message could execute arbitrary javascript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware. (CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787, CVE-2006-3807, CVE-2006-3809)

Several denial of service flaws were found in the way Thunderbird processed certain mail messages.  A malicious web page could crash the browser or possibly execute arbitrary code as the user running Thunderbird.  (CVE-2006-2779, CVE-2006-2780, CVE-2006-3801, CVE-2006-3677, CVE-2006-3113, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3811)

Several flaws were found in the way Thunderbird processed certain javascript actions.  A malicious mail message could conduct a cross-site scripting attack or steal sensitive information (such as cookies owned by other domains).  (CVE-2006-3802, CVE-2006-3810)

A form file upload flaw was found in the way Thunderbird handled javascript input object mutation.  A malicious mail message could upload an arbitrary local file at form submission time without user interaction.  (CVE-2006-2782)

A denial of service flaw was found in the way Thunderbird called the crypto.signText() javascript function.  A malicious mail message could crash the browser if the victim had a client certificate loaded. (CVE-2006-2778)

A flaw was found in the way Thunderbird processed Proxy AutoConfig scripts.  A malicious Proxy AutoConfig server could execute arbitrary javascript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install client malware. (CVE-2006-3808)

Note: Please note that JavaScript support is disabled by default in Thunderbird.  The above issues are not exploitable with JavaScript disabled. 

Two flaws were found in the way Thunderbird displayed malformed inline vcard attachments.  If a victim viewed an email message containing a carefully crafted vcard it was possible to execute arbitrary code as the user running Thunderbird.  (CVE-2006-2781, CVE-2006-3804)

A cross site scripting flaw was found in the way Thunderbird processed Unicode Byte-order-Mark (BOM) markers in UTF-8 mail messages.  A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed 'script' tag. (CVE-2006-2783)

Two HTTP response smuggling flaws were found in the way Thunderbird processed certain invalid HTTP response headers.  A malicious web site could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions.  (CVE-2006-2786)

A double free flaw was found in the way the nsIX509::getRawDER method was called.  If a victim visited a carefully crafted web page, it was possible to crash Thunderbird.  (CVE-2006-2788)

Jonas Sicking discovered that under some circumstances persisted XUL attributes are associated with the wrong URL. A malicious website could exploit this to execute arbitrary code with the privileges of the user. (MFSA 2006-35, CVE-2006-2775)

Paul Nickerson discovered that content-defined setters on an object prototype were getting called by privileged UI code. It was demonstrated that this could be exploited to run arbitrary web script with full user privileges (MFSA 2006-37, CVE-2006-2776). A similar attack was discovered by moz_bug_r_a4 that leveraged SelectionObject notifications that were called in privileged context. (MFSA 2006-43, CVE-2006-2777)

Mikolaj Habryn discovered a buffer overflow in the crypto.signText() function. By tricking a user to visit a site with an SSL certificate with specially crafted optional Certificate Authority name arguments, this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-38, CVE-2006-2778)

The Mozilla developer team discovered several bugs that lead to crashes with memory corruption. These might be exploitable by malicious websites to execute arbitrary code with the privileges of the user. (MFSA 2006-32, CVE-2006-2779, CVE-2006-2780)

Masatoshi Kimura discovered a memory corruption (double-free) when processing a large VCard with invalid base64 characters in it. By sending a maliciously crafted set of VCards to a user, this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-40, CVE-2006-2781)

Chuck McAuley reported that the fix for CVE-2006-1729 (file stealing by changing input type) was not sufficient to prevent all variants of exploitation. (MFSA 2006-41, CVE-2006-2782)

Masatoshi Kimura found a way to bypass web input sanitizers which filter out JavaScript. By inserting 'Unicode Byte-order-Mark (BOM)' characters into the HTML code (e. g. '<scr[BOM]ipt>'), these filters might not recognize the tags anymore; however, Mozilla would still execute them since BOM markers are filtered out before processing the page. (MFSA 2006-42, CVE-2006-2783)

Paul Nickerson noticed that the fix for CVE-2005-0752 (JavaScript privilege escalation on the plugins page) was not sufficient to prevent all variants of exploitation. (MFSA 2006-36, CVE-2006-2784)

Paul Nickerson demonstrated that if an attacker could convince a user to right-click on a broken image and choose 'View Image' from the context menu then he could get JavaScript to run on a site of the attacker's choosing. This could be used to steal login cookies or other confidential information from the target site. (MFSA 2006-34, CVE-2006-2785)

Kazuho Oku discovered various ways to perform HTTP response smuggling when used with certain proxy servers. Due to different interpretation of nonstandard HTTP headers in Mozilla and the proxy server, a malicious website can exploit this to send back two responses to one request. The second response could be used to steal login cookies or other sensitive data from another opened website. (MFSA 2006-33, CVE-2006-2786).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

USN-297-1 fixed several vulnerabilities in Thunderbird for the Ubuntu 6.06 LTS release. This update provides the corresponding fixes for Ubuntu 5.04 and Ubuntu 5.10.

For reference, these are the details of the original USN :

Jonas Sicking discovered that under some circumstances persisted XUL attributes are associated with the wrong URL. A malicious website could exploit this to execute arbitrary code with the privileges of the user. (MFSA 2006-35, CVE-2006-2775)

Paul Nickerson discovered that content-defined setters on an object prototype were getting called by privileged UI code.
It was demonstrated that this could be exploited to run arbitrary web script with full user privileges (MFSA 2006-37, CVE-2006-2776).

Mikolaj Habryn discovered a buffer overflow in the crypto.signText() function. By sending an email with malicious JavaScript to an user, and that user enabled JavaScript in Thunderbird (which is not the default and not recommended), this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-38, CVE-2006-2778)

The Mozilla developer team discovered several bugs that lead to crashes with memory corruption. These might be exploitable by malicious websites to execute arbitrary code with the privileges of the user. (MFSA 2006-32, CVE-2006-2779, CVE-2006-2780)

Masatoshi Kimura discovered a memory corruption (double-free) when processing a large VCard with invalid base64 characters in it. By sending a maliciously crafted set of VCards to a user, this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-40, CVE-2006-2781)

Masatoshi Kimura found a way to bypass web input sanitizers which filter out JavaScript. By inserting 'Unicode Byte-order-Mark (BOM)' characters into the HTML code (e. g.
'<scr[BOM]ipt>'), these filters might not recognize the tags anymore; however, Thunderbird would still execute them since BOM markers are filtered out before processing a mail containing JavaScript. (MFSA 2006-42, CVE-2006-2783)

Kazuho Oku discovered various ways to perform HTTP response smuggling when used with certain proxy servers. Due to different interpretation of nonstandard HTTP headers in Thunderbird and the proxy server, a malicious HTML email can exploit this to send back two responses to one request. The second response could be used to steal login cookies or other sensitive data from another opened web site. (MFSA 2006-33, CVE-2006-2786)

It was discovered that JavaScript run via EvalInSandbox() can escape the sandbox. Malicious scripts received in emails containing JavaScript could use these privileges to execute arbitrary code with the user's privileges. (MFSA 2006-31, CVE-2006-2787).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Jonas Sicking discovered that under some circumstances persisted XUL attributes are associated with the wrong URL. A malicious website could exploit this to execute arbitrary code with the privileges of the user. (MFSA 2006-35, CVE-2006-2775)

Paul Nickerson discovered that content-defined setters on an object prototype were getting called by privileged UI code. It was demonstrated that this could be exploited to run arbitrary web script with full user privileges (MFSA 2006-37, CVE-2006-2776).

Mikolaj Habryn discovered a buffer overflow in the crypto.signText() function. By sending an email with malicious JavaScript to an user, and that user enabled JavaScript in Thunderbird (which is not the default and not recommended), this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-38, CVE-2006-2778)

The Mozilla developer team discovered several bugs that lead to crashes with memory corruption. These might be exploitable by malicious websites to execute arbitrary code with the privileges of the user. (MFSA 2006-32, CVE-2006-2779, CVE-2006-2780)

Masatoshi Kimura discovered a memory corruption (double-free) when processing a large VCard with invalid base64 characters in it. By sending a maliciously crafted set of VCards to a user, this could potentially be exploited to execute arbitrary code with the user's privileges. (MFSA 2006-40, CVE-2006-2781)

Masatoshi Kimura found a way to bypass web input sanitizers which filter out JavaScript. By inserting 'Unicode Byte-order-Mark (BOM)' characters into the HTML code (e. g. '<scr[BOM]ipt>'), these filters might not recognize the tags anymore; however, Thunderbird would still execute them since BOM markers are filtered out before processing a mail containing JavaScript. (MFSA 2006-42, CVE-2006-2783)

Kazuho Oku discovered various ways to perform HTTP response smuggling when used with certain proxy servers. Due to different interpretation of nonstandard HTTP headers in Thunderbird and the proxy server, a malicious HTML email can exploit this to send back two responses to one request. The second response could be used to steal login cookies or other sensitive data from another opened website. (MFSA 2006-33, CVE-2006-2786)

It was discovered that JavaScript run via EvalInSandbox() can escape the sandbox. Malicious scripts received in emails containing JavaScript could use these privileges to execute arbitrary code with the user's privileges. (MFSA 2006-31, CVE-2006-2787)

The 'enigmail' plugin has been updated to work with the new Thunderbird version.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This security update fixes the following Problem in the SeaMonkey suite: MFSA 2006-40/CVE-2006-2781: Double-free vulnerability in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.

This update of Mozilla Thunderbird fixes the security problems fixed in version 1.5.0.4: MFSA 2006-31/CVE-2006-2787: EvalInSandbox in Mozilla Firefox and Thunderbird before 1.5.0.4 allows remote attackers to gain privileges via JavaScript that calls the valueOf method on objects that were created outside of the sandbox. MFSA 2006-32/CVE-2006-2780: Integer overflow in Mozilla Firefox and Thunderbird before 1.5.0.4 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via 'jsstr tagify,' which leads to memory corruption. MFSA 2006-32/CVE-2006-2779:
Mozilla Firefox and Thunderbird before 1.5.0.4 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) nested <option> tags in a select tag, (2) a DOMNodeRemoved mutation event, (3) 'Content-implemented tree views,' (4) BoxObjects, (5) the XBL implementation, (6) an iframe that attempts to remove itself, which leads to memory corruption. MFSA 2006-33/CVE-2006-2786: HTTP response smuggling vulnerability in Mozilla Firefox and Thunderbird before 1.5.0.4, when used with certain proxy servers, allows remote attackers to cause Firefox to interpret certain responses as if they were responses from two different sites via (1) invalid HTTP response headers with spaces between the header name and the colon, which might not be ignored in some cases, or (2) HTTP 1.1 headers through an HTTP 1.0 proxy, which are ignored by the proxy but processed by the client. MFSA 2006-35/CVE-2006-2775: Mozilla Firefox and Thunderbird before 1.5.0.4 associates XUL attributes with the wrong URL under certain unspecified circumstances, which might allow remote attackers to bypass restrictions by causing a persisted string to be associated with the wrong URL. MFSA 2006-37/CVE-2006-2776: Certain privileged UI code in Mozilla Firefox and Thunderbird before 1.5.0.4 calls content-defined setters on an object prototype, which allows remote attackers to execute code at a higher privilege than intended. MFSA 2006-38/CVE-2006-2778: The crypto.signText function in Mozilla Firefox and Thunderbird before 1.5.0.4 allows remote attackers to execute arbitrary code via certain optional Certificate Authority name arguments, which causes an invalid array index and triggers a buffer overflow. MFSA 2006-40/CVE-2006-2781: Double-free vulnerability in Mozilla Thunderbird before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to cause a denial of service (hang) and possibly execute arbitrary code via a VCard that contains invalid base64 characters.
MFSA 2006-42/CVE-2006-2783: Mozilla Firefox and Thunderbird before 1.5.0.4 strips the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.

A number of security vulnerabilities have been discovered and corrected in the latest Mozilla Thunderbird program.

Corporate 3 had contained the Mozilla suite however, due to the support cycle for Mozilla, it was felt that upgrading Mozilla to Firefox and Thunderbird would allow for better future support for Corporate 3 users. To that end, the latest Thunderbird is being provided for Corporate 3 users which fix all known vulnerabilities up to version 1.5.0.5, as well as providing new and enhanced features.

Corporate users who were using Mozilla for mail may need to explicitly install the new mozilla-thunderbird packages.

For 2006 users, no explicit installs are necessary.

The following CVE names have been corrected with this update:
CVE-2006-2775, CVE-2006-2776, CVE-2006-2778, CVE-2006-2779, CVE-2006-2780, CVE-2006-2781, CVE-2006-2783, CVE-2006-2787, CVE-2006-3803, CVE-2006-3804, CVE-2006-3806, CVE-2006-3807, CVE-2006-3113, CVE-2006-3802, CVE-2006-3805, CVE-2006-3809, CVE-2006-3810, CVE-2006-3811, CVE-2006-3812.

Several security related problems have been discovered in Mozilla which are also present in Mozilla Thunderbird. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities :

  - CVE-2006-1942     Eric Foley discovered that a user can be tricked to     expose a local file to a remote attacker by displaying a     local file as image in connection with other     vulnerabilities. [MFSA-2006-39]

  - CVE-2006-2775     XUL attributes are associated with the wrong URL under     certain circumstances, which might allow remote     attackers to bypass restrictions. [MFSA-2006-35]

  - CVE-2006-2776     Paul Nickerson discovered that content-defined setters     on an object prototype were getting called by privileged     user interface code, and 'moz_bug_r_a4' demonstrated     that the higher privilege level could be passed along to     the content-defined attack code. [MFSA-2006-37]

  - CVE-2006-2777     A vulnerability allows remote attackers to execute     arbitrary code and create notifications that are     executed in a privileged context. [MFSA-2006-43]

  - CVE-2006-2778     Mikolaj Habryn discovered a buffer overflow in the     crypto.signText function that allows remote attackers to     execute arbitrary code via certain optional Certificate     Authority name arguments. [MFSA-2006-38]

  - CVE-2006-2779     Mozilla team members discovered several crashes during     testing of the browser engine showing evidence of memory     corruption which may also lead to the execution of     arbitrary code. This problem has only partially been     corrected. [MFSA-2006-32]

  - CVE-2006-2780     An integer overflow allows remote attackers to cause a     denial of service and may permit the execution of     arbitrary code. [MFSA-2006-32]

  - CVE-2006-2781     Masatoshi Kimura discovered a double-free vulnerability     that allows remote attackers to cause a denial of     service and possibly execute arbitrary code via a VCard.
    [MFSA-2006-40]

  - CVE-2006-2782     Chuck McAuley discovered that a text input box can be     pre-filled with a filename and then turned into a     file-upload control, allowing a malicious website to     steal any local file whose name they can guess.
    [MFSA-2006-41, MFSA-2006-23, CVE-2006-1729]

  - CVE-2006-2783     Masatoshi Kimura discovered that the Unicode     Byte-order-Mark (BOM) is stripped from UTF-8 pages     during the conversion to Unicode before the parser sees     the web page, which allows remote attackers to conduct     cross-site scripting (XSS) attacks. [MFSA-2006-42]

  - CVE-2006-2784     Paul Nickerson discovered that the fix for CVE-2005-0752     can be bypassed using nested javascript: URLs, allowing     the attacker to execute privileged code. [MFSA-2005-34,     MFSA-2006-36]

  - CVE-2006-2785     Paul Nickerson demonstrated that if an attacker could     convince a user to right-click on a broken image and     choose 'View Image' from the context menu then he could     get JavaScript to run. [MFSA-2006-34]

  - CVE-2006-2786     Kazuho Oku discovered that Mozilla's lenient handling of     HTTP header syntax may allow remote attackers to trick     the browser to interpret certain responses as if they     were responses from two different sites. [MFSA-2006-33]

  - CVE-2006-2787     The Mozilla researcher 'moz_bug_r_a4' discovered that     JavaScript run via EvalInSandbox can escape the sandbox     and gain elevated privilege. [MFSA-2006-31]

Several security related problems have been discovered in Mozilla. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities :

  - CVE-2006-1942     Eric Foley discovered that a user can be tricked to     expose a local file to a remote attacker by displaying a     local file as image in connection with other     vulnerabilities. [MFSA-2006-39]

  - CVE-2006-2775     XUL attributes are associated with the wrong URL under     certain circumstances, which might allow remote     attackers to bypass restrictions. [MFSA-2006-35]

  - CVE-2006-2776     Paul Nickerson discovered that content-defined setters     on an object prototype were getting called by privileged     user interface code, and 'moz_bug_r_a4' demonstrated     that the higher privilege level could be passed along to     the content-defined attack code. [MFSA-2006-37]

  - CVE-2006-2777     A vulnerability allows remote attackers to execute     arbitrary code and create notifications that are     executed in a privileged context. [MFSA-2006-43]

  - CVE-2006-2778     Mikolaj Habryn discovered a buffer overflow in the     crypto.signText function that allows remote attackers to     execute arbitrary code via certain optional Certificate     Authority name arguments. [MFSA-2006-38]

  - CVE-2006-2779     Mozilla team members discovered several crashes during     testing of the browser engine showing evidence of memory     corruption which may also lead to the execution of     arbitrary code. This problem has only partially been     corrected. [MFSA-2006-32]

  - CVE-2006-2780     An integer overflow allows remote attackers to cause a     denial of service and may permit the execution of     arbitrary code. [MFSA-2006-32]

  - CVE-2006-2781     Masatoshi Kimura discovered a double-free vulnerability     that allows remote attackers to cause a denial of     service and possibly execute arbitrary code via a VCard.
    [MFSA-2006-40]

  - CVE-2006-2782     Chuck McAuley discovered that a text input box can be     pre-filled with a filename and then turned into a     file-upload control, allowing a malicious website to     steal any local file whose name they can guess.
    [MFSA-2006-41, MFSA-2006-23, CVE-2006-1729]

  - CVE-2006-2783     Masatoshi Kimura discovered that the Unicode     Byte-order-Mark (BOM) is stripped from UTF-8 pages     during the conversion to Unicode before the parser sees     the web page, which allows remote attackers to conduct     cross-site scripting (XSS) attacks. [MFSA-2006-42]

  - CVE-2006-2784     Paul Nickerson discovered that the fix for CVE-2005-0752     can be bypassed using nested javascript: URLs, allowing     the attacker to execute privileged code. [MFSA-2005-34,     MFSA-2006-36]

  - CVE-2006-2785     Paul Nickerson demonstrated that if an attacker could     convince a user to right-click on a broken image and     choose 'View Image' from the context menu then he could     get JavaScript to run. [MFSA-2006-34]

  - CVE-2006-2786     Kazuho Oku discovered that Mozilla's lenient handling of     HTTP header syntax may allow remote attackers to trick     the browser to interpret certain responses as if they     were responses from two different sites. [MFSA-2006-33]

  - CVE-2006-2787     The Mozilla researcher 'moz_bug_r_a4' discovered that     JavaScript run via EvalInSandbox can escape the sandbox     and gain elevated privilege. [MFSA-2006-31]

Updated SeaMonkey packages that fix several security bugs in the mozilla packages are now available for Red Hat Enterprise Linux 2.1.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

SeaMonkey is an open source Web browser, advanced email and newsgroup client, IRC chat client, and HTML editor.

The Mozilla Foundation has discontinued support for the Mozilla Suite.
This update deprecates the Mozilla Suite in Red Hat Enterprise Linux 2.1 in favor of the supported SeaMonkey Suite.

This update also resolves a number of outstanding Mozilla security issues :

Several flaws were found in the way SeaMonkey processed certain JavaScript actions. A malicious web page could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787, CVE-2006-3807, CVE-2006-3809, CVE-2006-3812)

Several denial of service flaws were found in the way SeaMonkey processed certain web content. A malicious web page could crash the browser or possibly execute arbitrary code as the user running SeaMonkey. (CVE-2006-2779, CVE-2006-2780, CVE-2006-3801, CVE-2006-3677, CVE-2006-3113, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3811)

Two flaws were found in the way SeaMonkey Messenger displayed malformed inline vcard attachments. If a victim viewed an email message containing a carefully crafted vcard it was possible to execute arbitrary code as the user running SeaMonkey Messenger.
(CVE-2006-2781, CVE-2006-3804)

A cross-site scripting flaw was found in the way SeaMonkey processed Unicode Byte-Order-Mark (BOM) markers in UTF-8 web pages. A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed 'script' tag. (CVE-2006-2783)

Several flaws were found in the way SeaMonkey processed certain JavaScript actions. A malicious web page could conduct a cross-site scripting attack or steal sensitive information (such as cookies owned by other domains). (CVE-2006-3802, CVE-2006-3810)

A form file upload flaw was found in the way SeaMonkey handled JavaScript input object mutation. A malicious web page could upload an arbitrary local file at form submission time without user interaction.
(CVE-2006-2782)

A denial of service flaw was found in the way SeaMonkey called the crypto.signText() JavaScript function. A malicious web page could crash the browser if the victim had a client certificate loaded.
(CVE-2006-2778)

Two HTTP response smuggling flaws were found in the way SeaMonkey processed certain invalid HTTP response headers. A malicious website could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions. (CVE-2006-2786)

A flaw was found in the way SeaMonkey processed Proxy AutoConfig scripts. A malicious Proxy AutoConfig server could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-3808)

A double free flaw was found in the way the nsIX509::getRawDER method was called. If a victim visited a carefully crafted web page it was possible to execute arbitrary code as the user running SeaMonkey.
(CVE-2006-2788)

Users of Mozilla are advised to upgrade to this update, which contains SeaMonkey version 1.0.3 that corrects these issues.

Updated SeaMonkey packages that fix several security bugs in the mozilla package are now available for Red Hat Enterprise Linux 4.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

SeaMonkey is an open source Web browser, advanced email and newsgroup client, IRC chat client, and HTML editor.

The Mozilla Foundation has discontinued support for the Mozilla Suite.
This update deprecates the Mozilla Suite in Red Hat Enterprise Linux 4 in favor of the supported SeaMonkey Suite.

This update also resolves a number of outstanding Mozilla security issues :

Several flaws were found in the way SeaMonkey processed certain JavaScript actions. A malicious web page could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787, CVE-2006-3807, CVE-2006-3809, CVE-2006-3812)

Several denial of service flaws were found in the way SeaMonkey processed certain web content. A malicious web page could crash the browser or possibly execute arbitrary code as the user running SeaMonkey. (CVE-2006-2779, CVE-2006-2780, CVE-2006-3801, CVE-2006-3677, CVE-2006-3113, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3811)

Two flaws were found in the way SeaMonkey-mail displayed malformed inline vcard attachments. If a victim viewed an email message containing a carefully crafted vcard it was possible to execute arbitrary code as the user running Mozilla-mail. (CVE-2006-2781, CVE-2006-3804)

A cross-site scripting flaw was found in the way SeaMonkey processed Unicode Byte-Order-Mark (BOM) markers in UTF-8 web pages. A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed 'script' tag. (CVE-2006-2783)

Several flaws were found in the way SeaMonkey processed certain JavaScript actions. A malicious web page could conduct a cross-site scripting attack or steal sensitive information (such as cookies owned by other domains). (CVE-2006-3802, CVE-2006-3810)

A form file upload flaw was found in the way SeaMonkey handled JavaScript input object mutation. A malicious web page could upload an arbitrary local file at form submission time without user interaction.
(CVE-2006-2782)

A denial of service flaw was found in the way SeaMonkey called the crypto.signText() JavaScript function. A malicious web page could crash the browser if the victim had a client certificate loaded.
(CVE-2006-2778)

Two HTTP response smuggling flaws were found in the way SeaMonkey processed certain invalid HTTP response headers. A malicious website could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions. (CVE-2006-2786)

A flaw was found in the way SeaMonkey processed Proxy AutoConfig scripts. A malicious Proxy AutoConfig server could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-3808)

A double free flaw was found in the way the nsIX509::getRawDER method was called. If a victim visited a carefully crafted web page, it was possible to execute arbitrary code as the user running Mozilla.
(CVE-2006-2788)

Users of Mozilla are advised to upgrade to this update, which contains SeaMonkey version 1.0.3 that corrects these issues.

Updated thunderbird packages that fix several security bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

Mozilla Thunderbird is a standalone mail and newsgroup client.

The Mozilla Foundation has discontinued support for the Mozilla Thunderbird 1.0 branch. This update deprecates the Mozilla Thunderbird 1.0 branch in Red Hat Enterprise Linux 4 in favor of the supported Mozilla Thunderbird 1.5 branch.

This update also resolves a number of outstanding Thunderbird security issues :

Several flaws were found in the way Thunderbird processed certain JavaScript actions. A malicious mail message could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787, CVE-2006-3807, CVE-2006-3809)

Several denial of service flaws were found in the way Thunderbird processed certain mail messages. A malicious web page could crash the browser or possibly execute arbitrary code as the user running Thunderbird. (CVE-2006-2779, CVE-2006-2780, CVE-2006-3801, CVE-2006-3677, CVE-2006-3113, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3811)

Several flaws were found in the way Thunderbird processed certain JavaScript actions. A malicious mail message could conduct a cross-site scripting attack or steal sensitive information (such as cookies owned by other domains). (CVE-2006-3802, CVE-2006-3810)

A form file upload flaw was found in the way Thunderbird handled JavaScript input object mutation. A malicious mail message could upload an arbitrary local file at form submission time without user interaction. (CVE-2006-2782)

A denial of service flaw was found in the way Thunderbird called the crypto.signText() JavaScript function. A malicious mail message could crash the browser if the victim had a client certificate loaded.
(CVE-2006-2778)

A flaw was found in the way Thunderbird processed Proxy AutoConfig scripts. A malicious Proxy AutoConfig server could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install client malware.
(CVE-2006-3808)

Note: Please note that JavaScript support is disabled by default in Thunderbird. The above issues are not exploitable with JavaScript disabled.

Two flaws were found in the way Thunderbird displayed malformed inline vcard attachments. If a victim viewed an email message containing a carefully crafted vcard it was possible to execute arbitrary code as the user running Thunderbird. (CVE-2006-2781, CVE-2006-3804)

A cross site scripting flaw was found in the way Thunderbird processed Unicode Byte-order-Mark (BOM) markers in UTF-8 mail messages. A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed 'script' tag.
(CVE-2006-2783)

Two HTTP response smuggling flaws were found in the way Thunderbird processed certain invalid HTTP response headers. A malicious website could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions. (CVE-2006-2786)

A double free flaw was found in the way the nsIX509::getRawDER method was called. If a victim visited a carefully crafted web page, it was possible to crash Thunderbird. (CVE-2006-2788)

Users of Thunderbird are advised to upgrade to this update, which contains Thunderbird version 1.5.0.5 that corrects these issues.

Versions of Mozilla Firefox 1.5.x prior to 1.5.0.5 are affected by various security issues, some of which may lead to execution of arbitrary code on the affected host subject to the user's privileges.

The remote Windows host contains a mail client that is affected by multiple vulnerabilities.  The remote version of Mozilla Thunderbird suffers from various security issues, at least one of which may lead to execution of arbitrary code on the affected host subject to the user's privileges.

Updated SeaMonkey packages that fix several security bugs in the mozilla package are now available for Red Hat Enterprise Linux 3.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

SeaMonkey is an open source Web browser, advanced email and newsgroup client, IRC chat client, and HTML editor.

The Mozilla Foundation has discontinued support for the Mozilla Suite.
This update deprecates the Mozilla Suite in Red Hat Enterprise Linux 3 in favor of the supported SeaMonkey Suite.

This update also resolves a number of outstanding Mozilla security issues :

Several flaws were found in the way Mozilla processed certain JavaScript actions. A malicious web page could execute arbitrary JavaScript instructions with the permissions of 'chrome', allowing the page to steal sensitive information or install browser malware.
(CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787)

Several denial of service flaws were found in the way Mozilla processed certain web content. A malicious web page could crash firefox or possibly execute arbitrary code. These issues to date were not proven to be exploitable, but do show evidence of memory corruption. (CVE-2006-2779, CVE-2006-2780)

A double-free flaw was found in the way Mozilla-mail displayed malformed inline vcard attachments. If a victim viewed an email message containing a carefully crafted vcard it could execute arbitrary code as the user running Mozilla-mail. (CVE-2006-2781)

A cross site scripting flaw was found in the way Mozilla processed Unicode Byte-order-Mark (BOM) markers in UTF-8 web pages. A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed 'script' tag. (CVE-2006-2783)

A form file upload flaw was found in the way Mozilla handled JavaScript input object mutation. A malicious web page could upload an arbitrary local file at form submission time without user interaction.
(CVE-2006-2782)

A denial of service flaw was found in the way Mozilla called the crypto.signText() JavaScript function. A malicious web page could crash the browser if the victim had a client certificate loaded.
(CVE-2006-2778)

Two HTTP response smuggling flaws were found in the way Mozilla processed certain invalid HTTP response headers. A malicious website could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions. (CVE-2006-2786)

A double free flaw was found in the way the nsIX509::getRawDER method was called. If a victim visited a carefully crafted web page it could execute arbitrary code as the user running Mozilla. (CVE-2006-2788)

Users of Mozilla are advised to upgrade to this update, which contains SeaMonkey version 1.0.2 that is not vulnerable to these issues.

The remote host is affected by the vulnerability described in GLSA-200606-21 (Mozilla Thunderbird: Multiple vulnerabilities)

    Several vulnerabilities were found and fixed in Mozilla Thunderbird.
    For details, please consult the references below.
  Impact :

    A remote attacker could craft malicious emails that would leverage     these issues to inject and execute arbitrary script code with elevated     privileges, spoof content, and possibly execute arbitrary code with the     rights of the user running the application.
  Workaround :

    There are no known workarounds for all the issues at this time.

The installed version of SeaMonkey contains various security issues, some of which could lead to execution of arbitrary code on the affected host subject to the user's privileges.

The remote version of Mozilla Thunderbird suffers from various security issues, some of which could lead to execution of arbitrary code on the affected host subject to the user's privileges.

The remote host is running a vulnerable version of Mozilla Thunderbird mail client. This version of Thunderbird is vulnerable to multiple flaws that might allow an attacker to launch Denial of Service attacks, buffer overflows, information disclosure, privilege escalation, and other issues.  An attacker exploiting these flaws would need to be able to convince a user to open or read a malicious email.  Successful exploitation would, at the most, give the attacker the ability to execute arbitrary code with the permissions of the user running Thunderbird. 

The remote host is using SeaMonkey. The installed version of SeaMonkey contains various security issues that may allow an attacker to execute code or escalate privileges on the remote browser.  An attacker exploiting these flaws would need to be able to convince a user to browse to a malicious URI.

Versions of Mozilla Firefox 1.5.x prior to 1.5.0.4 are affected by  multiple security flaws that could allow an attacker to execute arbitrary code, disable the service, or gain access to confidential data. An attacker exploiting this flaw would need to be able to convince a user to browse to a malicious URI. 

The remote host is using Firefox. The installed version of Firefox contains multiple flaws that could allow an attacker to execute arbitrary code, disable the service, or gain access to confidential data. An attacker exploiting this flaw would need to be able to convince a user to browse to a malicious URI.

The installed version of Firefox is affected by various security issues, some of which may lead to execution of arbitrary code on the affected host subject to the user's privileges.

ID	Name	Product	Family	Severity
67424	Oracle Linux 4 : thunderbird (ELSA-2006-0735 / ELSA-2006-0677 / ELBA-2006-0624 / ELSA-2006-0611)	Nessus	Oracle Linux Local Security Checks	critical
27901	Ubuntu 5.04 / 5.10 : mozilla vulnerabilities (USN-323-1)	Nessus	Ubuntu Local Security Checks	high
27872	Ubuntu 5.04 / 5.10 : mozilla-thunderbird vulnerabilities (USN-297-3)	Nessus	Ubuntu Local Security Checks	high
27870	Ubuntu 6.06 LTS : mozilla-thunderbird vulnerabilities (USN-297-1)	Nessus	Ubuntu Local Security Checks	high
27434	openSUSE 10 Security Update : seamonkey (seamonkey-1671)	Nessus	SuSE Local Security Checks	medium
27124	openSUSE 10 Security Update : MozillaThunderbird (MozillaThunderbird-1672)	Nessus	SuSE Local Security Checks	high
23894	Mandrake Linux Security Advisory : mozilla-thunderbird (MDKSA-2006:146)	Nessus	Mandriva Local Security Checks	critical
22676	Debian DSA-1134-1 : mozilla-thunderbird - several vulnerabilities	Nessus	Debian Local Security Checks	high
22660	Debian DSA-1118-1 : mozilla - several vulnerabilities	Nessus	Debian Local Security Checks	high
22291	RHEL 2.1 : seamonkey (RHSA-2006:0594)	Nessus	Red Hat Local Security Checks	high
22163	CentOS 4 : seamonkey (CESA-2006:0609)	Nessus	CentOS Local Security Checks	high
22150	RHEL 4 : seamonkey (RHSA-2006:0609)	Nessus	Red Hat Local Security Checks	high
22138	CentOS 4 : thunderbird (CESA-2006:0611)	Nessus	CentOS Local Security Checks	high
22122	RHEL 4 : thunderbird (RHSA-2006:0611)	Nessus	Red Hat Local Security Checks	high
3695	Mozilla Firefox 1.5.x < 1.5.0.5 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	medium
3694	Mozilla Thunderbird < 1.5.0.5 Multiple Vulnerabilities (deprecated)	Nessus Network Monitor	SMTP Clients	medium
22088	RHEL 3 : seamonkey (RHSA-2006:0578)	Nessus	Red Hat Local Security Checks	high
21734	GLSA-200606-21 : Mozilla Thunderbird: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
21629	SeaMonkey < 1.0.2 Multiple Vulnerabilities	Nessus	Windows	high
21628	Mozilla Thunderbird < 1.5.0.4 Multiple Vulnerabilities	Nessus	Windows	high
3638	Thunderbird < 1.5.0.4 Multiple Vulnerabilities (deprecated)	Nessus Network Monitor	SMTP Clients	medium
3637	SeaMonkey < 1.0.2 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	medium
3636	Mozilla Firefox 1.5.x < 1.5.0.4 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	medium
801227	Mozilla Thunderbird < 1.5.0.5 Multiple Vulnerabilities	Log Correlation Engine	SMTP Clients	high
800873	SeaMonkey < 1.0.2 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high
800779	Firefox < 1.5.0.4 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high
800763	Firefox < 1.5.0.5 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high

Detections

Analytics

CVE-2006-2781

critical

Tenable Plugins

critical

high

high

high

medium

high

critical

high

high

high

high

high

high

high

medium

medium

high

high

high

high

medium

medium

medium

high

high

high

high