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- CVEs with nessus.description==Mozilla Firefox was updated to version 7.
dbg114-MozillaFirefox-5208 MozillaFirefox-5208 new_updateinfo Improve Responsiveness with Memory Reductions dbg114-MozillaFirefox-5208 MozillaFirefox-5208 new_updateinfo Instant Sync dbg114-MozillaFirefox-5208 MozillaFirefox-5208 new_updateinfo WebSocket protocol 8
MFSA 2011-36: 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.
In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled,, but are potentially a risk in browser or browser-like contexts in those products.
Benjamin Smedberg, Bob Clary, and Jesse Ruderman reported memory safety problems that affected Firefox 3.6 and Firefox 6.
Bob Clary, Andrew McCreight, Andreas Gal, Gary Kwong, Igor Bukanov, Jason Orendorff, Jesse Ruderman, and Marcia Knous reported memory safety problems that affected Firefox 6, fixed in Firefox 7.
MFSA 2011-38: Mozilla developer Boris Zbarsky reported that a frame named 'location' could shadow the window.location object unless a script in a page grabbed a reference to the true object before the frame was created. Because some plugins use the value of window.location to determine the page origin this could fool the plugin into granting the plugin content access to another site or the local file system in violation of the Same Origin Policy. This flaw allows circumvention of the fix added for MFSA 2010-10.
MFSA 2011-39: Ian Graham of Citrix Online reported that when multiple Location headers were present in a redirect response Mozilla behavior differed from other browsers: Mozilla would use the second Location header while Chrome and Internet Explorer would use the first. Two copies of this header with different values could be a symptom of a CRLF injection attack against a vulnerable server. Most commonly it is the Location header itself that is vulnerable to the response splitting and therefore the copy preferred by Mozilla is more likely to be the malicious one. It is possible, however, that the first copy was the injected one depending on the nature of the server vulnerability.
The Mozilla browser engine has been changed to treat two copies of this header with different values as an error condition. The same has been done with the headers Content-Length and Content-Disposition.
MFSA 2011-40: Mariusz Mlynski reported that if you could convince a user to hold down the Enter key--as part of a game or test, perhaps--a malicious page could pop up a download dialog where the held key would then activate the default Open action. For some file types this would be merely annoying (the equivalent of a pop-up) but other file types have powerful scripting capabilities. And this would provide an avenue for an attacker to exploit a vulnerability in applications not normally exposed to potentially hostile internet content.
Mariusz also reported a similar flaw with manual plugin installation using the PLUGINSPAGE attribute. It was possible to create an internal error that suppressed a confirmation dialog, such that holding enter would lead to the installation of an arbitrary add-on. (This variant did not affect Firefox 3.6)
Holding enter allows arbitrary code execution due to Download Manager (CVE-2011-2372)
Holding enter allows arbitrary extension installation (CVE-2011-3001)
MFSA 2011-41: Michael Jordon of Context IS reported that in the ANGLE library used by WebGL the return value from GrowAtomTable() was not checked for errors. If an attacker could cause requests that exceeded the available memeory those would fail and potentially lead to a buffer overrun as subsequent code wrote into the non-allocated space.
Ben Hawkes of the Google Security Team reported a WebGL test case that demonstrated an out of bounds write after an allocation failed.
MFSA 2011-43: David Rees reported that the JSSubScriptLoader (a feature used by some add-ons) was 'unwrapping' XPCNativeWrappers when they were used as the scope parameter to loadSubScript(). Without the protection of the wrappers the add-on could be vulnerable to privilege escalation attacks from malicious web content. Whether any given add-on were vulnerable would depend on how the add-on used the feature and whether it interacted directly with web content, but we did find at least one vulnerable add-on and presumer there are more.
MFSA 2011-44: sczimmer reported that Firefox crashed when loading a particular .ogg file. This was due to a use-after-free condition and could potentially be exploited to install malware. (CVE-2011-3005)
MFSA 2011-45: University of California, Davis researchers Liang Cai and Hao Chen presented a paper at the 2011 USENIX HotSec workshop on inferring keystrokes from device motion data on mobile devices. Web pages can now receive data similar to the apps studied in that paper and likely present a similar risk. We have decided to limit motion data events to the currently-active tab to prevent the possibility of background tabs attempting to decipher keystrokes the user is entering into the foreground tab
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