Updated firefox packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5.

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

Mozilla Firefox is an open source Web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code as the user running Firefox.
(CVE-2009-1392, CVE-2009-1832, CVE-2009-1833, CVE-2009-1837, CVE-2009-1838, CVE-2009-1841)

Multiple flaws were found in the processing of malformed, local file content. If a user loaded malicious, local content via the file:// URL, it was possible for that content to access other local data.
(CVE-2009-1835, CVE-2009-1839)

A script, privilege elevation flaw was found in the way Firefox loaded XML User Interface Language (XUL) scripts. Firefox and certain add-ons could load malicious content when certain policy checks did not happen. (CVE-2009-1840)

A flaw was found in the way Firefox displayed certain Unicode characters in International Domain Names (IDN). If an IDN contained invalid characters, they may have been displayed as spaces, making it appear to the user that they were visiting a trusted site.
(CVE-2009-1834)

A flaw was found in the way Firefox handled error responses returned from proxy servers. If an attacker is able to conduct a man-in-the-middle attack against a Firefox instance that is using a proxy server, they may be able to steal sensitive information from the site the user is visiting. (CVE-2009-1836)

For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 3.0.11. You can find a link to the Mozilla advisories in the References section of this errata.

All Firefox users should upgrade to these updated packages, which contain Firefox version 3.0.11, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

New mozilla-firefox packages are available for Slackware 12.2, and
-current to fix security issues. The updated packages may also be used with Slackware 11.0 or newer.

The installed version of SeaMonkey is earlier than 1.1.17.  Such versions are potentially affected by the following security issues :

  - When an Adobe Flash file is loaded via the     'view-source:' scheme, the Flash plugin misinterprets     the origin of the content as localhost. An attacker can     leverage this to launch cross-site request forger     attacks. It is also possible to exploit this to place     cookie-like objects on victim's computers.
    (MFSA 2009-17)

  - An information disclosure vulnerability exists when     saving the inner frame of a web page as a file when the     outer page has POST data associated with it.
    (MFSA 2009-21)

  - Multiple memory corruption vulnerabilities could     potentially be exploited to execute arbitrary code.
    (MFSA 2009-24)

  - It may be possible for local resources loaded via     'file:' protocol to access any domain's cookies saved     on a user's system. (MFSA 2009-26)

  - It may be possible to tamper with SSL data via non-200     responses to proxy CONNECT requests. (MFSA 2009-27)

  - If the owner document of an element becomes null after     garbage collection, then it may be possible to execute     the event listeners within the wrong JavaScript context.
    An attacker can potentially exploit this vulnerability     to execute arbitrary JavaScript with chrome privileges.
    (MFSA 2009-29)

  - It may be possible for scripts from page content to     run with elevated privileges. (MFSA 2009-32)

  - It may be possible to crash SeaMonkey while viewing     'multipart/alternative' mail message with a     'text/enhanced' part. (MFSA 2009-33)

Several flaws were discovered in the JavaScript engine of Thunderbird.
If a user had JavaScript enabled and were tricked into viewing malicious web content, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-1303, CVE-2009-1305, CVE-2009-1392, CVE-2009-1833, CVE-2009-1838)

Several flaws were discovered in the way Thunderbird processed malformed URI schemes. If a user were tricked into viewing a malicious website and had JavaScript and plugins enabled, a remote attacker could execute arbitrary JavaScript or steal private data.
(CVE-2009-1306, CVE-2009-1307, CVE-2009-1309)

Cefn Hoile discovered Thunderbird did not adequately protect against embedded third-party stylesheets. If JavaScript were enabled, an attacker could exploit this to perform script injection attacks using XBL bindings. (CVE-2009-1308)

Shuo Chen, Ziqing Mao, Yi-Min Wang, and Ming Zhang discovered that Thunderbird did not properly handle error responses when connecting to a proxy server. If a user had JavaScript enabled while using Thunderbird to view websites and a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2009-1836)

It was discovered that Thunderbird could be made to run scripts with elevated privileges. If a user had JavaScript enabled while having certain non-default add-ons installed and were tricked into viewing a malicious website, an attacker could cause a chrome privileged object, such as the browser sidebar, to run arbitrary code via interactions with the attacker controlled website. (CVE-2009-1841).

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.

A number of security vulnerabilities have been discovered for Mozilla Thunderbird version 2.0.0.21 (CVE-2009-1302, CVE-2009-1303, CVE-2009-1304, CVE-2009-1305, CVE-2009-1306, CVE-2009-1307, CVE-2009-1308, CVE-2009-1309, CVE-2009-2210, CVE-2009-1392, CVE-2009-1832, CVE-2009-1833, CVE-2009-1838, CVE-2009-1836, CVE-2009-1840, CVE-2009-1841).

This update provides the latest Thunderbird to correct these issues.

The Mozilla Firefox browser was updated to version 3.0.11, fixing various bugs and security issues :

  - MFSA 2009-24/CVE-2009-1392/CVE-2009-1832/CVE-2009-1833     Crashes with evidence of memory corruption (rv:1.9.0.11)

  - MFSA 2009-25/CVE-2009-1834 (bmo#479413) URL spoofing     with invalid unicode characters

  - MFSA 2009-26/CVE-2009-1835 (bmo#491801) Arbitrary domain     cookie access by local file: resources

  - MFSA 2009-27/CVE-2009-1836 (bmo#479880) SSL tampering     via non-200 responses to proxy CONNECT requests

  - MFSA 2009-28/CVE-2009-1837 (bmo#486269) Race condition     while accessing the private data of a NPObject JS     wrapper class object

  - MFSA 2009-29/CVE-2009-1838 (bmo#489131) Arbitrary code     execution using event listeners attached to an element     whose owner document is null

  - MFSA 2009-30/CVE-2009-1839 (bmo#479943) Incorrect     principal set for file: resources loaded via location     bar

  - MFSA 2009-31/CVE-2009-1840 (bmo#477979) XUL scripts     bypass content-policy checks

  - MFSA 2009-32/CVE-2009-1841 (bmo#479560) JavaScript     chrome privilege escalation

seamonkey was updated to version 1.1.18, fixing various security issues :

MFSA 2009-43 / CVE-2009-2404 Moxie Marlinspike reported a heap overflow vulnerability in the code that handles regular expressions in certificate names. This vulnerability could be used to compromise the browser and run arbitrary code by presenting a specially crafted certificate to the client. This code provided compatibility with the non-standard regular expression syntax historically supported by Netscape clients and servers. With version 3.5 Firefox switched to the more limited industry-standard wildcard syntax instead and is not vulnerable to this flaw. 

MFSA 2009-42 / CVE-2009-2408: IOActive security researcher Dan Kaminsky reported a mismatch in the treatment of domain names in SSL certificates between SSL clients and the Certificate Authorities (CA) which issue server certificates. In particular, if a malicious person requested a certificate for a host name with an invalid null character in it most CAs would issue the certificate if the requester owned the domain specified after the null, while most SSL clients (browsers) ignored that part of the name and used the unvalidated part in front of the null. This made it possible for attackers to obtain certificates that would function for any site they wished to target.
These certificates could be used to intercept and potentially alter encrypted communication between the client and a server such as sensitive bank account transactions. This vulnerability was independently reported to us by researcher Moxie Marlinspike who also noted that since Firefox relies on SSL to protect the integrity of security updates this attack could be used to serve malicious updates.
Mozilla would like to thank Dan and the Microsoft Vulnerability Research team for coordinating a multiple-vendor response to this problem.

The update also contains the fixes from the skipped 1.1.17 security update: MFSA 2009-17/CVE-2009-1307: Same-origin violations when Adobe Flash loaded via view-source: scheme 

MFSA 2009-21/CVE-2009-1311:POST data sent to wrong site when saving web page with embedded frame 

MFSA 2009-24/CVE-2009-1392/CVE-2009-1832/CVE-2009-1833: Crashes with evidence of memory corruption (rv:1.9.0.11) 

MFSA 2009-26/CVE-2009-1835: Arbitrary domain cookie access by local file: resources 

MFSA 2009-27/CVE-2009-1836: SSL tampering via non-200 responses to proxy CONNECT requests 

MFSA 2009-29/CVE-2009-1838: Arbitrary code execution using event listeners attached to an element whose owner document is null 

MFSA 2009-32/CVE-2009-1841: JavaScript chrome privilege escalation MFSA 2009-33/CVE-2009-2210: Crash viewing multipart/alternative message with text/enhanced part

The version of Google Chrome installed on the remote host is earlier than 1.0.154.53. Such versions are reportedly affected by a multiple vulnerabilities : 

  - The browser uses the HTTP Host header to determine the context of a 4xx/5xx CONNECT response from a proxy server. This could allow a man-in-the-middle attacker to execute arbitrary script code in the context of a legitimate server. (CVE-2009-2060)

  - The browser displays a cached certificate for 4xx/5xx CONNECT response pages from a proxy server. A man-in-the-middle attacker could exploit this by displaying a spoofed web page with the valid certificate of a legitimate website.

Versions of Firefox prior to 3.0.11 are affected by the following security issues : 

 - Multiple memory corruption vulnerabilities could potentially be exploited to execute arbitrary code. (MFSA 2009-24)
 - Certain invalid Unicode characters, when used as a part of IDN, can be displayed as a whitespace in the location bar. An attacker can exploit this vulnerability to spoof the location bar. (MFSA 2009-25)
 - It may be possible for local resources loaded via 'file: ' protocol to access any domain's cookies saved on a user's system. (MFSA 2009-26)
 - It may be possible to tamper with SSL date via non-200 responses to proxy CONNECT requests. (MFSA 2009-27)
 - A race condition exists in 'NPObjWrapper_NewResolve' when accessing the properties of a NPObject, a wrapped JSObject. (MFSA 2009-28)
 - If the owner document of an element becomes a null after garbage collection, then it may be possible to execute the event listeners within the wrong JavaScript context. An attacker can potentially exploit this vulnerability to execute arbitrary JavaScript with chrome privileges. (MFSA 2009-29)
 - When the 'file: ' resource is loaded from the location bar, the resource inherits principal of the previously loaded document. This could potentially allow unauthorized access to local files. (MFSA-2009-30)
 - While loading external scripts into XUL documents content-loading policies are not checked. (MFSA 2009-31)
 - It may also be possible for scripts from page content to run with elevated privileges. (MFSA 2009-32)

The installed version of Firefox is earlier than 3.0.11. Such versions are potentially affected by the following security issues : 

  - Multiple memory corruption vulnerabilities could potentially be exploited to execute arbitrary code. (MFSA 2009-24)

  - Certain invalid Unicode characters, when used as a part of IDN, can be displayed as a whitespace in the location bar. An attacker can exploit this vulnerability to spoof the location bar. (MFSA 2009-25)

  - It may be possible for local resources loaded via 'file: ' protocol to access any domain's cookies saved on a user's system. (MFSA 2009-26)

  - It may be possible to tamper with SSL date via non-200 responses to proxy CONNECT requests. (MFSA 2009-27)

  - A race condition exists in 'NPObjWrapper_NewResolve' when accessing the properties of a NPObject, a wrapped JSObject. (MFSA 2009-28)

  - If the owner document of an element becomes a null after garbage collection, then it may be possible to execute the event listeners within the wrong JavaScript context. An attacker can potentially exploit this vulnerability to execute arbitrary JavaScript with chrome privileges. (MFSA 2009-29)

  - When the 'file: ' resource is loaded from the location bar, the resource inherits principal of the previously loaded document. This could potentially allow unauthorized access to local files. (MFSA-2009-30)

  - While loading external scripts into XUL documents content-loading policies are not checked. (MFSA 2009-31)

  - It may also be possible for scripts from page content to run with elevated privileges. (MFSA 2009-32)

ID	Name	Product	Family	Published	Updated	Severity
43755	CentOS 5 : firefox (CESA-2009:1095)	Nessus	CentOS Local Security Checks	1/6/2010	1/4/2021	high
39421	Slackware 12.2 / current : mozilla-firefox (SSA:2009-167-01)	Nessus	Slackware Local Security Checks	6/17/2009	1/14/2021	high
39494	SeaMonkey < 1.1.17 Multiple Vulnerabilities	Nessus	Windows	6/23/2009	7/27/2018	high
39533	Ubuntu 8.04 LTS / 8.10 / 9.04 : thunderbird vulnerabilities (USN-782-1)	Nessus	Ubuntu Local Security Checks	6/26/2009	1/19/2021	high
39581	Mandriva Linux Security Advisory : mozilla-thunderbird (MDVSA-2009:141)	Nessus	Mandriva Local Security Checks	6/28/2009	1/6/2021	high
39891	openSUSE Security Update : MozillaFirefox (MozillaFirefox-1000)	Nessus	SuSE Local Security Checks	7/21/2009	1/14/2021	high
42202	openSUSE Security Update : seamonkey (seamonkey-1364)	Nessus	SuSE Local Security Checks	10/22/2009	1/14/2021	high
42206	openSUSE Security Update : seamonkey (seamonkey-1364)	Nessus	SuSE Local Security Checks	10/22/2009	1/14/2021	high
5079	Google Chrome < 1.0.154.53 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	8/18/2004	3/6/2019	medium
5072	Mozilla Firefox < 3.0.11 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	8/18/2004	3/6/2019	medium
800755	Firefox < 3.0.11 Multiple Vulnerabilities	Log Correlation Engine	Web Clients			high
800933	Google Chrome < 1.0.154.53 Multiple Vulnerabilities	Log Correlation Engine	Web Clients			medium

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