Mozilla Firefox was updated to version 3.5.9 fixing lots of bugs and security issues.

The following security issues were fixed :

  - Mozilla developers identified and fixed several     stability bugs in the browser engine used in Firefox and     other Mozilla-based products. Some of these crashes     showed evidence of memory corruption under certain     circumstances, and we presume that with enough effort at     least some of these could be exploited to run arbitrary     code. (MFSA 2010-16)

References

Martijn Wargers, Josh Soref, and Jesse Ruderman reported crashes in the browser engine that affected Firefox 3.5 and Firefox 3.6.
(CVE-2010-0173)

Jesse Ruderman and Ehsan Akhgari reported crashes that affected all supported versions of the browser engine. (CVE-2010-0174)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative that a select event     handler for XUL tree items could be called after the     tree item was deleted. This results in the execution of     previously freed memory which an attacker could use to     crash a victim's browser and run arbitrary code on the     victim's computer. (MFSA 2010-17 / CVE-2010-0175)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative an error in the way     elements are inserted into a XUL tree optgroup. In     certain cases, the number of references to an element is     under-counted so that when the element is deleted, a     live pointer to its old location is kept around and may     later be used. An attacker could potentially use these     conditions to run arbitrary code on a victim's computer.
    (MFSA 2010-18 / CVE-2010-0176)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative an error in the     implementation of the window.navigator.plugins object.
    When a page reloads, the plugins array would reallocate     all of its members without checking for existing     references to each member. This could result in the     deletion of objects for which valid pointers still     exist. An attacker could use this vulnerability to crash     a victim's browser and run arbitrary code on the     victim's machine. (MFSA 2010-19 / CVE-2010-0177)

  - Security researcher Paul Stone reported that a browser     applet could be used to turn a simple mouse click into a     drag-and-drop action, potentially resulting in the     unintended loading of resources in a user's browser.
    This behavior could be used twice in succession to first     load a privileged chrome: URL in a victim's browser,     then load a malicious javascript: URL on top of the same     document resulting in arbitrary script execution with     chrome privileges. (MFSA 2010-20 / CVE-2010-0178)

  - Mozilla security researcher moz_bug_r_a4 reported that     the XMLHttpRequestSpy module in the Firebug add-on was     exposing an underlying chrome privilege escalation     vulnerability. When the XMLHttpRequestSpy object was     created, it would attach various properties of itself to     objects defined in web content, which were not being     properly wrapped to prevent their exposure to chrome     privileged objects. This could result in an attacker     running arbitrary JavaScript on a victim's machine,     though it required the victim to have Firebug installed,     so the overall severity of the issue was determined to     be High. (MFSA 2010-21 / CVE-2010-0179)

  - Mozilla developers added support in the Network Security     Services module for preventing a type of     man-in-the-middle attack against TLS using forced     renegotiation. (MFSA 2010-22 / CVE-2009-3555)

Note that to benefit from the fix, Firefox 3.6 and Firefox 3.5 users will need to set their security.ssl.require_safe_negotiation preference to true. Firefox 3 does not contain the fix for this issue.

  - phpBB developer Henry Sudhof reported that when an image     tag points to a resource that redirects to a mailto:
    URL, the external mail handler application is launched.
    This issue poses no security threat to users but could     create an annoyance when browsing a site that allows     users to post arbitrary images. (MFSA 2010-23 /     CVE-2010-0181)

  - Mozilla community member Wladimir Palant reported that     XML documents were failing to call certain security     checks when loading new content. This could result in     certain resources being loaded that would otherwise     violate security policies set by the browser or     installed add-ons. (MFSA 2010-24 / CVE-2010-0182)

Mozilla XULRunner was updated to version 1.9.0.19 fixing lots of bugs and security issues.

The following security issues were fixed :

  - Mozilla developers identified and fixed several     stability bugs in the browser engine used in Firefox and     other Mozilla-based products. Some of these crashes     showed evidence of memory corruption under certain     circumstances, and we presume that with enough effort at     least some of these could be exploited to run arbitrary     code. (MFSA 2010-16)

References

Martijn Wargers, Josh Soref, and Jesse Ruderman reported crashes in the browser engine that affected Firefox 3.5 and Firefox 3.6.
(CVE-2010-0173)

Jesse Ruderman and Ehsan Akhgari reported crashes that affected all supported versions of the browser engine. (CVE-2010-0174)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative that a select event     handler for XUL tree items could be called after the     tree item was deleted. This results in the execution of     previously freed memory which an attacker could use to     crash a victim's browser and run arbitrary code on the     victim's computer. (MFSA 2010-17 / CVE-2010-0175)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative an error in the way     option elements are inserted into a XUL tree optgroup.
    In certain cases, the number of references to an option     element is under-counted so that when the element is     deleted, a live pointer to its old location is kept     around and may later be used. An attacker could     potentially use these conditions to run arbitrary code     on a victim's computer. (MFSA 2010-18 / CVE-2010-0176)

  - Security researcher regenrecht reported via     TippingPoint's Zero Day Initiative an error in the     implementation of the window.navigator.plugins object.
    When a page reloads, the plugins array would reallocate     all of its members without checking for existing     references to each member. This could result in the     deletion of objects for which valid pointers still     exist. An attacker could use this vulnerability to crash     a victim's browser and run arbitrary code on the     victim's machine. (MFSA 2010-19 / CVE-2010-0177)

  - Security researcher Paul Stone reported that a browser     applet could be used to turn a simple mouse click into a     drag-and-drop action, potentially resulting in the     unintended loading of resources in a user's browser.
    This behavior could be used twice in succession to first     load a privileged chrome: URL in a victim's browser,     then load a malicious javascript: URL on top of the same     document resulting in arbitrary script execution with     chrome privileges. (MFSA 2010-20 / CVE-2010-0178)

  - Mozilla security researcher moz_bug_r_a4 reported that     the XMLHttpRequestSpy module in the Firebug add-on was     exposing an underlying chrome privilege escalation     vulnerability. When the XMLHttpRequestSpy object was     created, it would attach various properties of itself to     objects defined in web content, which were not being     properly wrapped to prevent their exposure to chrome     privileged objects. This could result in an attacker     running arbitrary JavaScript on a victim's machine,     though it required the victim to have Firebug installed,     so the overall severity of the issue was determined to     be High. (MFSA 2010-21 / CVE-2010-0179)

  - Mozilla developers added support in the Network Security     Services module for preventing a type of     man-in-the-middle attack against TLS using forced     renegotiation. (MFSA 2010-22 / CVE-2009-3555)

Note that to benefit from the fix, Firefox 3.6 and Firefox 3.5 users will need to set their security.ssl.require_safe_negotiation preference to true. Firefox 3 does not contain the fix for this issue.

  - phpBB developer Henry Sudhof reported that when an image     tag points to a resource that redirects to a mailto:
    URL, the external mail handler application is launched.
    This issue poses no security threat to users but could     create an annoyance when browsing a site that allows     users to post arbitrary images. (MFSA 2010-23 /     CVE-2010-0181)

  - Mozilla community member Wladimir Palant reported that     XML documents were failing to call certain security     checks when loading new content. This could result in     certain resources being loaded that would otherwise     violate security policies set by the browser or     installed add-ons. (MFSA 2010-24 / CVE-2010-0182)

An updated thunderbird package that fixes several security issues is now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Mozilla Thunderbird is a standalone mail and newsgroup client.

A memory corruption flaw was found in the way Thunderbird decoded certain PNG images. An attacker could create a mail message containing a specially crafted PNG image that, when opened, could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2010-1205)

Several flaws were found in the processing of malformed HTML mail content. An HTML mail message containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2010-0174, CVE-2010-1200, CVE-2010-1211, CVE-2010-1214, CVE-2010-2753)

An integer overflow flaw was found in the processing of malformed HTML mail content. An HTML mail message containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2010-1199)

Several use-after-free flaws were found in Thunderbird. Viewing an HTML mail message containing malicious content could result in Thunderbird executing arbitrary code with the privileges of the user running Thunderbird. (CVE-2010-0175, CVE-2010-0176, CVE-2010-0177)

A flaw was found in the way Thunderbird plug-ins interact. It was possible for a plug-in to reference the freed memory from a different plug-in, resulting in the execution of arbitrary code with the privileges of the user running Thunderbird. (CVE-2010-1198)

A flaw was found in the way Thunderbird handled the 'Content-Disposition: attachment' HTTP header when the 'Content-Type:
multipart' HTTP header was also present. Loading remote HTTP content that allows arbitrary uploads and relies on the 'Content-Disposition:
attachment' HTTP header to prevent content from being displayed inline, could be used by an attacker to serve malicious content to users. (CVE-2010-1197)

A same-origin policy bypass flaw was found in Thunderbird. Remote HTML content could steal private data from different remote HTML content Thunderbird has loaded. (CVE-2010-2754)

All Thunderbird users should upgrade to this updated package, which resolves these issues. All running instances of Thunderbird must be restarted for the update to take effect.

Martijn Wargers, Josh Soref, Jesse Ruderman, and Ehsan Akhgari discovered flaws in the browser engine of Firefox. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2010-0174)

It was discovered that Firefox could be made to access previously freed memory. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program.
(CVE-2010-0175, CVE-2010-0176, CVE-2010-0177)

Paul Stone discovered that Firefox could be made to change a mouse click into a drag and drop event. If the user could be tricked into performing this action twice on a crafted website, an attacker could execute arbitrary JavaScript with chrome privileges. (CVE-2010-0178)

It was discovered that the XMLHttpRequestSpy module as used by the Firebug add-on could be used to escalate privileges within the browser. If the user had the Firebug add-on installed and were tricked into viewing a malicious website, an attacker could potentially run arbitrary JavaScript. (CVE-2010-0179).

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.

Martijn Wargers, Josh Soref, Jesse Ruderman, and Ehsan Akhgari discovered flaws in the browser engine of Firefox. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2010-0173, CVE-2010-0174)

It was discovered that Firefox could be made to access previously freed memory. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program.
(CVE-2010-0175, CVE-2010-0176, CVE-2010-0177)

Paul Stone discovered that Firefox could be made to change a mouse click into a drag and drop event. If the user could be tricked into performing this action twice on a crafted website, an attacker could execute arbitrary JavaScript with chrome privileges. (CVE-2010-0178)

It was discovered that the XMLHttpRequestSpy module as used by the Firebug add-on could be used to escalate privileges within the browser. If the user had the Firebug add-on installed and were tricked into viewing a malicious website, an attacker could potentially run arbitrary JavaScript. (CVE-2010-0179)

Henry Sudhof discovered that an image tag could be used as a redirect to a mailto: URL to launch an external mail handler. (CVE-2010-0181)

Wladimir Palant discovered that Firefox did not always perform security checks on XML content. An attacker could exploit this to bypass security policies to load certain resources. (CVE-2010-0182).

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.

The remote Redhat Enterprise Linux 4 / 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2010:0332 advisory.

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

    Several use-after-free flaws were found in Firefox. Visiting a web page     containing malicious content could result in Firefox executing arbitrary     code with the privileges of the user running Firefox. (CVE-2010-0175,     CVE-2010-0176, CVE-2010-0177)

    A flaw was found in Firefox that could allow an applet to generate a drag     and drop action from a mouse click. Such an action could be used to execute     arbitrary JavaScript with the privileges of the user running Firefox.
    (CVE-2010-0178)

    A privilege escalation flaw was found in Firefox when the Firebug add-on is     in use. The XMLHttpRequestSpy module in the Firebug add-on exposes a Chrome     privilege escalation flaw that could be used to execute arbitrary     JavaScript with the privileges of the user running Firefox. (CVE-2010-0179)

    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 with the privileges of the user running     Firefox. (CVE-2010-0174)

    For technical details regarding these flaws, refer to the Mozilla security     advisories for Firefox 3.0.19. You can find a link to the Mozilla     advisories in the References section of this erratum.

    All Firefox users should upgrade to these updated packages, which contain     Firefox version 3.0.19, which corrects these issues. After installing the     update, Firefox must be restarted for the changes to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
50872	SuSE 11 Security Update : MozillaFirefox, MozillaFirefox-branding-upstream, etc (SAT Patch Number 2254)	Nessus	SuSE Local Security Checks	12/2/2010	1/14/2021	critical
50950	SuSE 11 Security Update : Mozilla XULrunner (SAT Patch Number 2255)	Nessus	SuSE Local Security Checks	12/2/2010	1/14/2021	critical
63939	RHEL 5 : thunderbird (RHSA-2010:0545)	Nessus	Red Hat Local Security Checks	1/24/2013	1/14/2021	critical
45483	Ubuntu 8.04 LTS / 8.10 / 9.04 : firefox-3.0, xulrunner-1.9 vulnerabilities (USN-920-1)	Nessus	Ubuntu Local Security Checks	4/12/2010	9/19/2019	critical
45484	Ubuntu 9.10 : firefox-3.5, xulrunner-1.9.1 vulnerabilities (USN-921-1)	Nessus	Ubuntu Local Security Checks	4/12/2010	9/19/2019	critical
46291	RHEL 4 / 5 : firefox (RHSA-2010:0332)	Nessus	Red Hat Local Security Checks	5/11/2010	3/20/2025	critical

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