===================================================================== CERT-Renater Note d'Information No. 2011/VULN166 _____________________________________________________________________ DATE : 02/03/2011 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running Firefox versions prior to 3.6.14, 3.5.17, SeaMonkey versions prior to 2.0.12, Thunderbird versions prior to 3.1.8. ====================================================================== http://www.mozilla.org/security/announce/2011/mfsa2011-10.html http://www.mozilla.org/security/announce/2011/mfsa2011-09.html http://www.mozilla.org/security/announce/2011/mfsa2011-08.html http://www.mozilla.org/security/announce/2011/mfsa2011-07.html http://www.mozilla.org/security/announce/2011/mfsa2011-06.html http://www.mozilla.org/security/announce/2011/mfsa2011-05.html http://www.mozilla.org/security/announce/2011/mfsa2011-04.html http://www.mozilla.org/security/announce/2011/mfsa2011-03.html http://www.mozilla.org/security/announce/2011/mfsa2011-02.html http://www.mozilla.org/security/announce/2011/mfsa2011-01.html ______________________________________________________________________ Mozilla Foundation Security Advisory 2011-10 Title: CSRF risk with plugins and 307 redirects Impact: High Announced: March 1, 2011 Reporter: Peleus Uhley Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Adobe security researcher Peleus Uhley reported that when plugin-initiated requests receive a 307 redirect response, the plugin is not notified and the request is forwarded to the new location. This is true even for cross-site redirects, so any custom headers that were added as part of the initial request would be forwarded intact across origins. This poses a CSRF risk for web applications that rely on custom headers only being present in requests from their own origin. References * https://bugzilla.mozilla.org/show_bug.cgi?id=573873 * CVE-2011-0059 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-09 Title: Crash caused by corrupted JPEG image Impact: Critical Announced: March 1, 2011 Reporter: Jordi Chancel Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 3.6.14 Thunderbird 3.1.8 SeaMonkey 2.0.12 Description Security researcher Jordi Chancel reported that a JPEG image could be constructed that would be decoded incorrectly, causing data to be written past the end of a buffer created to store the image. An attacker could potentially craft such an image that would cause malicious code to be stored in memory and then later executed on a victim's computer. Firefox 3.5 was not affected by this issue. References * https://bugzilla.mozilla.org/show_bug.cgi?id=610601 * CVE-2011-0061 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-08 Title: ParanoidFragmentSink allows javascript: URLs in chrome documents Impact: Moderate Announced: March 1, 2011 Reporter: Roberto Suggi Liverani Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 Thunderbird 3.1.8 SeaMonkey 2.0.12 Description Mozilla security developer Roberto Suggi Liverani reported that ParanoidFragmentSink, a class used to sanitize potentially unsafe HTML for display, allows javascript: URLs and other inline JavaScript when the embedding document is a chrome document. While there are no unsafe uses of this class in any released products, extension code could have potentially used it in an unsafe manner. References * https://bugzilla.mozilla.org/show_bug.cgi?id=562547 * CVE-2010-1585 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-07 Title: Memory corruption during text run construction (Windows) Impact: Critical Announced: March 1, 2011 Reporter: Alex Miller Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Alex Miller reported that when very long strings were constructed and inserted into an HTML document, the browser would incorrectly construct the layout objects used to display the text. Under such conditions an incorrect length would be calculated for a text run resulting in too small of a memory buffer being allocated to store the text. This issue could be used by an attacker to write data past the end of the buffer and execute malicious code on a victim's computer. References * https://bugzilla.mozilla.org/show_bug.cgi?id=607160 * CVE-2011-0058 ________________________________________________________________________ Mozilla Foundation Security Advisory 2011-06 Title: Use-after-free error using Web Workers Impact: Critical Announced: March 1, 2011 Reporter: Daniel Kozlowski Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Daniel Kozlowski reported that a JavaScript Worker could be used to keep a reference to an object that could be freed during garbage collection. Subsequent calls through this deleted reference could cause attacker-controlled memory to be executed on a victim's computer. References * https://bugzilla.mozilla.org/show_bug.cgi?id=626631 * CVE-2011-0057 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-05 Title: Buffer overflow in JavaScript atom map Impact: Critical Announced: March 1, 2011 Reporter: Christian Holler Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Security researcher Christian Holler reported that the JavaScript engine's internal mapping of string values contained an error in cases where the number of values being stored was above 64K. In such cases an offset pointer was manually moved forwards and backwards to access the larger address space. If an exception was thrown between the time that the offset pointer was moved forward and the time it was reset, then the exception object would be read from an invalid memory address, potentially executing attacker-controlled memory. References * https://bugzilla.mozilla.org/show_bug.cgi?id=622015 * CVE-2011-0056 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-04 Title: Buffer overflow in JavaScript upvarMap Impact: Critical Announced: March 1, 2011 Reporter: Christian Holler Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Security researcher Christian Holler reported that the JavaScript engine's internal memory mapping of non-local JS variables contained a buffer overflow which could potentially be used by an attacker to run arbitrary code on a victim's computer. References * https://bugzilla.mozilla.org/show_bug.cgi?id=615657 * CVE-2011-0054 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-03 Title: Use-after-free error in JSON.stringify Impact: Critical Announced: March 1, 2011 Reporter: regenrecht Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a method used by JSON.stringify contained a use-after-free error in which a currently in-use pointer was freed and subsequently dereferenced. This could lead to arbitrary code execution if an attacker was able to store malicious code in the freed section of memory. Mozilla developer Igor Bukanov also independently discovered and reported this issue two weeks after the initial report was received. References * JSON.stringify dangling pointer bugs * CVE-2011-0055 _______________________________________________________________________ Mozilla Foundation Security Advisory 2011-02 Title: Recursive eval call causes confirm dialogs to evaluate to true Impact: Critical Announced: March 1, 2011 Reporter: Zach Hoffman Products: Firefox, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 SeaMonkey 2.0.12 Description Security researcher Zach Hoffman reported that a recursive call to eval() wrapped in a try/catch statement places the browser into a inconsistent state. Any dialog box opened in this state is displayed without text and with non-functioning buttons. Closing the window causes the dialog to evaluate to true. An attacker could use this issue to force a user into accepting any dialog, such as one granting elevated privileges to the page presenting the dialog. References * https://bugzilla.mozilla.org/show_bug.cgi?id=616659 * CVE-2011-0051 Portions of this content are ©1998–2011 by individual mozilla.org contributors. Content available under a Creative Commons license. ______________________________________________________________________ Mozilla Foundation Security Advisory 2011-01 Title: Miscellaneous memory safety hazards (rv:1.9.2.14/ 1.9.1.17) Impact: Critical Announced: March 1, 2011 Reporter: Mozilla developers and community Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 3.6.14 Firefox 3.5.17 Thunderbird 3.1.8 SeaMonkey 2.0.12 Description 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. References Jesse Ruderman, Igor Bukanov, Olli Pettay, Gary Kwong, Jeff Walden, Henry Sivonen, Martijn Wargers, David Baron and Marcia Knous reported memory safety problems that affected Firefox 3.6 and Firefox 3.5. * Memory safety bugs - Firefox 3.6, Firefox 3.5 * CVE-2011-0053 Igor Bukanov and Gary Kwong reported memory safety problems that affected Firefox 3.6 only. * Memory safety bugs - Firefox 3.6 * CVE-2011-0062 ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================