Mozilla Firefox 1.5.0.9 and 2.0.0.1, and SeaMonkey before 1.0.8 allow remote attackers to execute arbitrary code via JavaScript onUnload handlers that modify the structure of a document, wich triggers memory corruption due to the lack of a finalize hook on DOM window objects.

From Red Hat Security Advisory 2007:0079 :

Updated firefox 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 Firefox is an open source Web browser.

Several flaws were found in the way Firefox processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in Firefox crashing or executing arbitrary code as the user running Firefox. (CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way Firefox processed certain malformed web pages. A malicious web page could display misleading information which may result in a user unknowingly divulging sensitive information such as a password. (CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way Firefox cached web pages on the local disk. A malicious web page may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way Firefox displayed certain web content. A malicious web page could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site.
(CVE-2007-0779)

Two flaws were found in the way Firefox displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running Firefox. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Firefox handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of Firefox are advised to upgrade to these erratum packages, which contain Firefox version 1.5.0.10 that corrects these issues.

From Red Hat Security Advisory 2007:0078 :

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.

[Updated 06 March 2007] Updated text description to add CVE-2007-1282 and remove CVE-2007-0994, which was mistakenly listed as affecting Thunderbird. No changes have been made to these erratum packages.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the way Thunderbird processed certain malformed JavaScript code. A malicious HTML mail message could execute JavaScript code in such a way that may result in Thunderbird crashing or executing arbitrary code as the user running Thunderbird.
JavaScript support is disabled by default in Thunderbird; these issues are not exploitable unless the user has enabled JavaScript.
(CVE-2007-0775, CVE-2007-0777, CVE-2007-1092)

A flaw was found in the way Thunderbird processed text/enhanced and text/richtext formatted mail message. A specially crafted mail message could execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2007-1282)

Several cross-site scripting (XSS) flaws were found in the way Thunderbird processed certain malformed HTML mail messages. A malicious HTML mail message could display misleading information which may result in a user unknowingly divulging sensitive information such as a password. (CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way Thunderbird cached web content on the local disk. A malicious HTML mail message may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way Thunderbird displayed certain web content.
A malicious HTML mail message could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site. (CVE-2007-0779)

Two flaws were found in the way Thunderbird displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running Thunderbird. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Thunderbird handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious HTML mail message to set domain cookies for an arbitrary site, or possibly perform an XSS attack.
(CVE-2007-0981)

Users of Thunderbird are advised to apply this update, which contains Thunderbird version 1.5.0.10 that corrects these issues.

From Red Hat Security Advisory 2007:0077 :

Updated SeaMonkey packages that fix several security bugs are now available for Red Hat Enterprise Linux 2.1, 3, and 4.

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

[Updated 26 February 2007] Packages for Red Hat Enterprise Linux 4 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

[Updated 12 March 2007] Packages for Red Hat Enterprise Linux 2.1 and 3 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

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

Several flaws were found in the way SeaMonkey processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in SeaMonkey crashing or executing arbitrary code as the user running SeaMonkey.
(CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way SeaMonkey processed certain malformed web pages. A malicious web page could display misleading information which may result in a user unknowingly divulging sensitive information such as a password.
(CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way SeaMonkey cached web pages on the local disk. A malicious web page may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way SeaMonkey displayed certain web content. A malicious web page could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site.
(CVE-2007-0779)

Two flaws were found in the way SeaMonkey displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running SeaMonkey. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way SeaMonkey handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of SeaMonkey are advised to upgrade to these erratum packages, which contain SeaMonkey version 1.0.8 that corrects these issues.

USN-428-1 fixed vulnerabilities in Firefox 1.5. However, changes to library paths caused applications depending on libnss3 to fail to start up. This update fixes the problem.

We apologize for the inconvenience.

Several flaws have been found that could be used to perform Cross-site scripting attacks. A malicious website could exploit these to modify the contents or steal confidential data (such as passwords) from other opened web pages. (CVE-2006-6077, CVE-2007-0780, CVE-2007-0800, CVE-2007-0981, CVE-2007-0995, CVE-2007-0996)

The SSLv2 protocol support in the NSS library did not sufficiently check the validity of public keys presented with a SSL certificate. A malicious SSL website using SSLv2 could potentially exploit this to execute arbitrary code with the user's privileges. (CVE-2007-0008)

The SSLv2 protocol support in the NSS library did not sufficiently verify the validity of client master keys presented in an SSL client certificate. A remote attacker could exploit this to execute arbitrary code in a server application that uses the NSS library. (CVE-2007-0009)

Various flaws have been reported that could allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page.
(CVE-2007-0775, CVE-2007-0776, CVE-2007-0777, CVE-2007-1092) 

Two web pages could collide in the disk cache with the result that depending on order loaded the end of the longer document could be appended to the shorter when the shorter one was reloaded from the cache. It is possible a determined hacker could construct a targeted attack to steal some sensitive data from a particular web page. The potential victim would have to be already logged into the targeted service (or be fooled into doing so) and then visit the malicious site. (CVE-2007-0778)

David Eckel reported that browser UI elements--such as the host name and security indicators--could be spoofed by using custom cursor images and a specially crafted style sheet.
(CVE-2007-0779).

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.

Several flaws have been found that could be used to perform Cross-site scripting attacks. A malicious website could exploit these to modify the contents or steal confidential data (such as passwords) from other opened web pages. (CVE-2006-6077, CVE-2007-0780, CVE-2007-0800, CVE-2007-0981, CVE-2007-0995, CVE-2007-0996)

The SSLv2 protocol support in the NSS library did not sufficiently check the validity of public keys presented with a SSL certificate. A malicious SSL website using SSLv2 could potentially exploit this to execute arbitrary code with the user's privileges. (CVE-2007-0008)

The SSLv2 protocol support in the NSS library did not sufficiently verify the validity of client master keys presented in an SSL client certificate. A remote attacker could exploit this to execute arbitrary code in a server application that uses the NSS library.
(CVE-2007-0009)

Various flaws have been reported that could allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page. (CVE-2007-0775, CVE-2007-0776, CVE-2007-0777, CVE-2007-1092)

Two web pages could collide in the disk cache with the result that depending on order loaded the end of the longer document could be appended to the shorter when the shorter one was reloaded from the cache. It is possible a determined hacker could construct a targeted attack to steal some sensitive data from a particular web page. The potential victim would have to be already logged into the targeted service (or be fooled into doing so) and then visit the malicious site. (CVE-2007-0778)

David Eckel reported that browser UI elements--such as the host name and security indicators--could be spoofed by using custom cursor images and a specially crafted style sheet. (CVE-2007-0779).

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 new seamonkey package is available for Slackware 11.0 to fix security 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.

[Updated 06 March 2007] Updated text description to add CVE-2007-1282 and remove CVE-2007-0994, which was mistakenly listed as affecting Thunderbird. No changes have been made to these erratum packages.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the way Thunderbird processed certain malformed JavaScript code. A malicious HTML mail message could execute JavaScript code in such a way that may result in Thunderbird crashing or executing arbitrary code as the user running Thunderbird.
JavaScript support is disabled by default in Thunderbird; these issues are not exploitable unless the user has enabled JavaScript.
(CVE-2007-0775, CVE-2007-0777, CVE-2007-1092)

A flaw was found in the way Thunderbird processed text/enhanced and text/richtext formatted mail message. A specially crafted mail message could execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2007-1282)

Several cross-site scripting (XSS) flaws were found in the way Thunderbird processed certain malformed HTML mail messages. A malicious HTML mail message could display misleading information which may result in a user unknowingly divulging sensitive information such as a password. (CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way Thunderbird cached web content on the local disk. A malicious HTML mail message may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way Thunderbird displayed certain web content.
A malicious HTML mail message could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site. (CVE-2007-0779)

Two flaws were found in the way Thunderbird displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running Thunderbird. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Thunderbird handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious HTML mail message to set domain cookies for an arbitrary site, or possibly perform an XSS attack.
(CVE-2007-0981)

Users of Thunderbird are advised to apply this update, which contains Thunderbird version 1.5.0.10 that corrects these issues.

A number of security vulnerabilities have been discovered and corrected in the latest Mozilla Firefox program, version 1.5.0.10.

This update provides the latest Firefox to correct these issues.

Update :

A regression was found in the latest Firefox packages provided where changes to library paths caused applications that depended on the NSS libraries (such as Thunderbird and Evolution) to fail to start or fail to load certain SSL-related security components. These new packages correct that problem and we apologize for any inconvenience the previous update may have caused.

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

Versions of Mozilla Firefox 1.5.x prior ot 1.5.0.10, or 2.x prior to 2.0.0.2 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.

Updated firefox 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 Firefox is an open source Web browser.

Several flaws were found in the way Firefox processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in Firefox crashing or executing arbitrary code as the user running Firefox. (CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way Firefox processed certain malformed web pages. A malicious web page could display misleading information which may result in a user unknowingly divulging sensitive information such as a password. (CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way Firefox cached web pages on the local disk. A malicious web page may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way Firefox displayed certain web content. A malicious web page could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site.
(CVE-2007-0779)

Two flaws were found in the way Firefox displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running Firefox. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Firefox handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of Firefox are advised to upgrade to these erratum packages, which contain Firefox version 1.5.0.10 that corrects these issues.

Updated SeaMonkey packages that fix several security bugs are now available for Red Hat Enterprise Linux 2.1, 3, and 4.

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

[Updated 26 February 2007] Packages for Red Hat Enterprise Linux 4 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

[Updated 12 March 2007] Packages for Red Hat Enterprise Linux 2.1 and 3 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

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

Several flaws were found in the way SeaMonkey processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in SeaMonkey crashing or executing arbitrary code as the user running SeaMonkey.
(CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way SeaMonkey processed certain malformed web pages. A malicious web page could display misleading information which may result in a user unknowingly divulging sensitive information such as a password.
(CVE-2006-6077, CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way SeaMonkey cached web pages on the local disk. A malicious web page may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778)

A flaw was found in the way SeaMonkey displayed certain web content. A malicious web page could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site.
(CVE-2007-0779)

Two flaws were found in the way SeaMonkey displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running SeaMonkey. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way SeaMonkey handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of SeaMonkey are advised to upgrade to these erratum packages, which contain SeaMonkey version 1.0.8 that corrects these issues.

The Mozilla Foundation reports of multiple security issues in Firefox, SeaMonkey, and Thunderbird. Several of these issues can probably be used to run arbitrary code with the privilege of the user running the program.

- MFSA 2007-08 onUnload + document.write() memory corruption

- MFSA 2007-07 Embedded nulls in location.hostname confuse same-domain checks

- MFSA 2007-06 Mozilla Network Security Services (NSS) SSLv2 buffer overflow

- MFSA 2007-05 XSS and local file access by opening blocked popups

- MFSA 2007-04 Spoofing using custom cursor and CSS3 hotspot

- MFSA 2007-03 Information disclosure through cache collisions

- MFSA 2007-02 Improvements to help protect against Cross-Site Scripting attacks

- MFSA 2007-01 Crashes with evidence of memory corruption (rv:1.8.0.10/1.8.1.2)

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

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
67455	Oracle Linux 4 : Firefox (ELSA-2007-0079)	Nessus	Oracle Linux Local Security Checks	high
67454	Oracle Linux 4 : thunderbird (ELSA-2007-0078)	Nessus	Oracle Linux Local Security Checks	high
67453	Oracle Linux 3 / 4 : seamonkey (ELSA-2007-0077)	Nessus	Oracle Linux Local Security Checks	high
67452	Oracle Linux 4 : seamonkey (ELSA-2007-0077-2)	Nessus	Oracle Linux Local Security Checks	high
28022	Ubuntu 6.06 LTS : firefox regression (USN-428-2)	Nessus	Ubuntu Local Security Checks	high
28021	Ubuntu 5.10 / 6.06 LTS / 6.10 : firefox vulnerabilities (USN-428-1)	Nessus	Ubuntu Local Security Checks	high
24791	Slackware 11.0 : seamonkey (SSA:2007-066-05)	Nessus	Slackware Local Security Checks	high
24774	RHEL 4 : thunderbird (RHSA-2007:0078)	Nessus	Red Hat Local Security Checks	high
24763	CentOS 4 : thunderbird (CESA-2007:0078)	Nessus	CentOS Local Security Checks	high
24753	Mandrake Linux Security Advisory : mozilla-firefox (MDKSA-2007:050-1)	Nessus	Mandriva Local Security Checks	high
3927	SeaMonkey < 1.0.8 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	medium
24735	SeaMonkey < 1.0.8 Multiple Vulnerabilities	Nessus	Windows	high
3922	Mozilla Firefox < 1.5.0.10 / 2.0.0.2 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	medium
24708	RHEL 4 : Firefox (RHSA-2007:0079)	Nessus	Red Hat Local Security Checks	high
24707	RHEL 2.1 / 3 / 4 : seamonkey (RHSA-2007:0077)	Nessus	Red Hat Local Security Checks	high
24705	FreeBSD : mozilla -- multiple vulnerabilities (12bd6ecf-c430-11db-95c5-000c6ec775d9)	Nessus	FreeBSD Local Security Checks	high
24704	CentOS 4 : firefox (CESA-2007:0079)	Nessus	CentOS Local Security Checks	high
24703	CentOS 3 / 4 : seamonkey (CESA-2007:0077)	Nessus	CentOS Local Security Checks	high
24701	Firefox < 1.5.0.10 / 2.0.0.2 Multiple Vulnerabilities	Nessus	Windows	high
800879	SeaMonkey < 1.0.8 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high
800760	Firefox < 1.5.0.10 / 2.0.0.2 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high

Detections

Analytics

CVE-2007-1092

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

medium

high

medium

high

high

high

high

high

high

high

high