Mozilla Firefox was updated to update 3.6.13 fixing several security issues.

MFSA 2010-74: Mozilla developers identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs 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.

Jesee Ruderman, Andreas Gal, Nils, and Brian Hackett reported memory safety problems that affected Firefox 3.6 and Firefox 3.5.
(CVE-2010-3776) Igor Bukanov reported a memory safety problem that was fixed in Firefox 3.6 only. (CVE-2010-3777) Jesse Ruderman reported a crash which affected Firefox 3.5 only. (CVE-2010-3778)

MFSA 2010-75 / CVE-2010-3769: Dirk Heinrich reported that on Windows platforms when document.write() was called with a very long string a buffer overflow was caused in line breaking routines attempting to process the string for display. Such cases triggered an invalid read past the end of an array causing a crash which an attacker could potentially use to run arbitrary code on a victim's computer.

MFSA 2010-76 / CVE-2010-3771: Security researcher echo reported that a web page could open a window with an about:blank location and then inject an <isindex> element into that page which upon submission would redirect to a chrome: document. The effect of this defect was that the original page would wind up with a reference to a chrome-privileged object, the opened window, which could be leveraged for privilege escalation attacks.

Mozilla security researcher moz_bug_r_a4 provided proof-of-concept code demonstrating how the above vulnerability could be used to run arbitrary code with chrome privileges.

MFSA 2010-77 / CVE-2010-3772: Security researcher wushi of team509 reported that when a XUL tree had an HTML <div> element nested inside a <treechildren> element then code attempting to display content in the XUL tree would incorrectly treat the <div> element as a parent node to tree content underneath it resulting in incorrect indexes being calculated for the child content. These incorrect indexes were used in subsequent array operations which resulted in writing data past the end of an allocated buffer. An attacker could use this issue to crash a victim's browser and run arbitrary code on their machine.

MFSA 2010-78 / CVE-2010-3768: Mozilla added the OTS font sanitizing library to prevent downloadable fonts from exposing vulnerabilities in the underlying OS font code. This library mitigates against several issues independently reported by Red Hat Security Response Team member Marc Schoenefeld and Mozilla security researcher Christoph Diehl.

MFSA 2010-79 / CVE-2010-3775: Security researcher Gregory Fleischer reported that when a Java LiveConnect script was loaded via a data:
URL which redirects via a meta refresh, then the resulting plugin object was created with the wrong security principal and thus received elevated privileges such as the abilities to read local files, launch processes, and create network connections.

MFSA 2010-80 / CVE-2010-3766: Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a nsDOMAttribute node can be modified without informing the iterator object responsible for various DOM traversals. This flaw could lead to a inconsistent state where the iterator points to an object it believes is part of the DOM but actually points to some other object. If such an object had been deleted and its memory reclaimed by the system, then the iterator could be used to call into attacker-controlled memory.

MFSA 2010-81 / CVE-2010-3767: Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that JavaScript arrays were vulnerable to an integer overflow vulnerability. The report demonstrated that an array could be constructed containing a very large number of items such that when memory was allocated to store the array items, the integer value used to calculate the buffer size would overflow resulting in too small a buffer being allocated. Subsequent use of the array object could then result in data being written past the end of the buffer and causing memory corruption.

MFSA 2010-82 / CVE-2010-3773: Mozilla security researcher moz_bug_r_a4 reported that the fix for CVE-2010-0179 could be circumvented permitting the execution of arbitrary JavaScript with chrome privileges.

MFSA 2010-83 / CVE-2010-3774: Google security researcher Michal Zalewski reported that when a window was opened to a site resulting in a network or certificate error page, the opening site could access the document inside the opened window and inject arbitrary content. An attacker could use this bug to spoof the location bar and trick a user into thinking they were on a different site than they actually were.

MFSA 2010-84 / CVE-2010-3770: Security researchers Yosuke Hasegawa and Masatoshi Kimura reported that the x-mac-arabic, x-mac-farsi and x-mac-hebrew character encodings are vulnerable to XSS attacks due to some characters being converted to angle brackets when displayed by the rendering engine. Sites using these character encodings would thus be potentially vulnerable to script injection attacks if their script filtering code fails to strip out these specific characters.

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     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 installed version of SeaMonkey is earlier than 2.0.3.  Such versions are potentially affected by the following security issues :

  - Multiple crashes can result in arbitrary code execution.
    (MFSA 2010-01)

  - The implementation of 'Web Workers' contained an error     in its handling of array data types when processing     posted messages. (MFSA 2010-02)

  - The HTML parser incorrectly frees used memory when     insufficient space is available to process remaining     input. (MFSA 2010-03)

  - A cross-site scripting issue exists due to     'window.dialogArguments' being readable cross-domain.
    (MFSA 2010-04)

  - A cross-site scripting issue exists when using SVG     documents and binary Content-Type. (MFSA 2010-05)

  - Multiple crashes can result in arbitrary code execution.
    (MFSA 2010-11)

  - A cross-site scripting issue when using     'addEventListener' and 'setTimeout' on a wrapped object.
    (MFSA 2010-12)

  - It is possible to corrupt a user's XUL cache.     (MFSA 2010-14)     
  - The XMLHttpRequestSpy module in the Firebug add-on     exposes an underlying chrome privilege escalation     vulnerability. (MFSA 2010-21)

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-2010-3766, CVE-2010-3767, CVE-2010-3772, CVE-2010-3776, CVE-2010-3777)

A flaw was found in the way Firefox handled malformed JavaScript. A website with an object containing malicious JavaScript could cause Firefox to execute that JavaScript with the privileges of the user running Firefox. (CVE-2010-3771)

This update adds support for the Sanitiser for OpenType (OTS) library to Firefox. This library helps prevent potential exploits in malformed OpenType fonts by verifying the font file prior to use.
(CVE-2010-3768)

A flaw was found in the way Firefox loaded Java LiveConnect scripts.
Malicious web content could load a Java LiveConnect script in a way that would result in the plug-in object having elevated privileges, allowing it to execute Java code with the privileges of the user running Firefox. (CVE-2010-3775)

It was found that the fix for CVE-2010-0179 was incomplete when the Firebug add-on was used. If a user visited a website containing malicious JavaScript while the Firebug add-on was enabled, it could cause Firefox to execute arbitrary JavaScript with the privileges of the user running Firefox. (CVE-2010-3773)

A flaw was found in the way Firefox presented the location bar to users. A malicious website could trick a user into thinking they are visiting the site reported by the location bar, when the page is actually content controlled by an attacker. (CVE-2010-3774)

A cross-site scripting (XSS) flaw was found in the Firefox x-mac-arabic, x-mac-farsi, and x-mac-hebrew character encodings.
Certain characters were converted to angle brackets when displayed. If server-side script filtering missed these cases, it could result in Firefox executing JavaScript code with the permissions of a different website. (CVE-2010-3770)

After installing the update, Firefox must be restarted for the changes to take effect.

ID	Name	Product	Family	Published	Updated	Severity
53769	openSUSE Security Update : MozillaFirefox (MozillaFirefox-3688)	Nessus	SuSE Local Security Checks	5/5/2011	1/14/2021	high
49892	SuSE 10 Security Update : Mozilla Firefox (ZYPP Patch Number 6979)	Nessus	SuSE Local Security Checks	10/11/2010	1/14/2021	critical
44660	SeaMonkey < 2.0.3 Multiple Vulnerabilities	Nessus	Windows	2/18/2010	5/27/2026	high
60916	Scientific Linux Security Update : firefox on SL4.x, SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	8/1/2012	1/14/2021	high

Detections

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critical

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high