This patch updates Mozilla Firefox to the 3.5.9 release.

It includes the following security fixes: MFSA 2010-16: 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. 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)

MFSA 2010-17 / CVE-2010-0175: 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 2010-18 / CVE-2010-0176: 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 2010-19 / CVE-2010-0177: 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 2010-20 / CVE-2010-0178: 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 2010-21 / CVE-2010-0179: 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 2010-22 / CVE-2009-3555: 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.

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.

MFSA 2010-23 / CVE-2010-0181: 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 2010-24 / CVE-2010-0182: 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.

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)

The remote host is running a version of Mozilla Firefox earlier than 3.0.19.  Such versions are potentially affected by multiple security issues : 

 - Multiple crashes can result in arbitrary code execution. (MFSA 2010-16)
 - A select event handler for XUL tree items can be called after the item is deleted. (MFSA 2010-17)
 - An error exists in the way '<option>' elements are inserted into a XUL tree '<optgroup>'. (MFSA 2010-18)
 - An error exists in the implementation of the 'windows.navigator.plugins' object. (MFSA 2010-19)
 - A browser applet can 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. (MFSA 2010-20)
 - The XMLHttpRequestSpy module in the Firebug add-on exposes an underlying chrome privilege escalation vulnerability. (MFSA 2010-21)

The remote host is running a version of Mozilla Firefox earlier than 3.0.19.  Such versions are potentially affected by multiple security issues : 

  - Multiple crashes can result in arbitrary code execution. (MFSA 2010-16)

  - A select event handler for XUL tree items can be called after the item is deleted. (MFSA 2010-17)

  - An error exists in the way '&lt;option&gt;' elements are inserted into a XUL tree '&lt;optgroup&gt;'. (MFSA 2010-18)

  - An error exists in the implementation of the 'windows.navigator.plugins' object. (MFSA 2010-19)

  - A browser applet can 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. (MFSA 2010-20)

  - The XMLHttpRequestSpy module in the Firebug add-on exposes an underlying chrome privilege escalation vulnerability. (MFSA 2010-21)

ID	Name	Product	Family	Published	Updated	Severity
45527	openSUSE Security Update : MozillaFirefox (openSUSE-SU-2010:0102-3)	Nessus	SuSE Local Security Checks	4/14/2010	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
5493	Mozilla Firefox < 3.0.19 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	3/31/2010	3/6/2019	medium
801260	Mozilla Firefox < 3.0.19 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	3/31/2010		high

Detections

Analytics

Plugins Search

critical

critical

medium

high