==================================================================== CERT-Renater Note d'Information No. 2012/VULN200 ____________________________________________________________________ DATE : 25/04/2012 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S) : Systems running Firefox versions prior to 12.0, ESR 10.0.4, Thunderbird versions prior to 12.0, ESR 10.0.4, SeaMonkey versions prior to 2.9, Firefox Mobile versions prior to 10.0.4. ====================================================================== http://www.mozilla.org/security/announce/2012/mfsa2012-20.html http://www.mozilla.org/security/announce/2012/mfsa2012-21.html http://www.mozilla.org/security/announce/2012/mfsa2012-22.html http://www.mozilla.org/security/announce/2012/mfsa2012-23.html http://www.mozilla.org/security/announce/2012/mfsa2012-24.html http://www.mozilla.org/security/announce/2012/mfsa2012-25.html http://www.mozilla.org/security/announce/2012/mfsa2012-26.html http://www.mozilla.org/security/announce/2012/mfsa2012-27.html http://www.mozilla.org/security/announce/2012/mfsa2012-28.html http://www.mozilla.org/security/announce/2012/mfsa2012-29.html http://www.mozilla.org/security/announce/2012/mfsa2012-30.html http://www.mozilla.org/security/announce/2012/mfsa2012-31.html http://www.mozilla.org/security/announce/2012/mfsa2012-32.html http://www.mozilla.org/security/announce/2012/mfsa2012-33.html ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-20 Title: Miscellaneous memory safety hazards (rv:12.0/ rv:10.0.4) Impact: Critical Announced: April 24, 2012 Reporter: Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 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. 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. References Christian Holler a reported memory safety and security problem affecting Firefox 11. Assertion failure: (ptrBits & 0x7) == 0, at ../../jsval.h:873 or Crash [@ compartment] or [@ js::array_shift] CVE-2012-0468 Bob Clary, Christian Holler, Brian Hackett, Bobby Holley, Gary Kwong, Hilary Hall, Honza Bambas, Jesse Ruderman, Julian Seward, and Olli Pettay reported memory safety problems and crashes that affect Firefox ESR and Firefox 11. Memory safety bugs fixed in Firefox 12 and Firefox ESR 10.0.4 CVE-2012-0467 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-21 Title: Multiple security flaws fixed in FreeType v2.4.9 Impact: Critical Announced: April 24, 2012 Reporter: Mateusz Jurczyk Products: Firefox Mobile Fixed in: Firefox Mobile 10.0.4 Description Mateusz Jurczyk of the Google Security Team used the Address Sanitizer tool to discover a series of memory safety bugs in the FreeType library, some of which could cause memory corruption and exploitable crashes with certain fonts and font parsing. Firefox Mobile has been upgraded to FreeType version 2.4.9 which addresses these issues. Desktop Firefox does not use Freetype for fonts and was not affected. On Linux systems, Firefox will use the installed system library for FreeType. Linux users should make sure they are current on system security updates. References FreeType: Multiple security flaws to be fixed in v2.4.9 CVE-2012-1126 CVE-2012-1127 CVE-2012-1128 CVE-2012-1129 CVE-2012-1130 CVE-2012-1131 CVE-2012-1132 CVE-2012-1133 CVE-2012-1134 CVE-2012-1135 CVE-2012-1136 CVE-2012-1137 CVE-2012-1138 CVE-2012-1139 CVE-2012-1140 CVE-2012-1141 CVE-2012-1142 CVE-2012-1143 CVE-2012-1144 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-22 Title: use-after-free in IDBKeyRange Impact: Critical Announced: April 24, 2012 Reporter: Aki Helin Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Using the Address Sanitizer tool, security researcher Aki Helin from OUSPG found that IDBKeyRange of indexedDB remains in the XPConnect hashtable instead of being unlinked before being destroyed. When it is destroyed, this causes a use-after-free, which is potentially exploitable. References use-after-free at mozilla::dom::indexedDB::IDBKeyRange::cycleCollection::Trace CVE-2012-0469 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-23 Title: Invalid frees causes heap corruption in gfxImageSurface Impact: Critical Announced: April 24, 2012 Reporter: Atte Kettunen Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Using the Address Sanitizer tool, security researcher Atte Kettunen from OUSPG found a heap corruption in gfxImageSurface which allows for invalid frees and possible remote code execution. This happens due to float error, resulting from graphics values being passed through different number systems. References ASAN: Heap-buffer-overflow WRITE of size 1 at nsSVGFEDiffuseLightingElement::LightPixel CVE-2012-0470 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-24 Title: Potential XSS via multibyte content processing errors Impact: High Announced: April 24, 2012 Reporter: Anne van Kesteren Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Anne van Kesteren of Opera Software found a multi-octet encoding issue where certain octets will destroy the following octets in the processing of some multibyte character sets. This can leave users vulnerable to cross-site scripting (XSS) attacks on maliciously crafted web pages. References More multi-octet encoding issues CVE-2012-0471 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-25 Title: Potential memory corruption during font rendering using cairo-dwrite Impact: Critical Announced: April 24, 2012 Reporter: wushi, iDefense Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Security research firm iDefense reported that researcher wushi of team509 discovered a memory corruption on Windows Vista and Windows 7 systems with hardware acceleration disabled or using incompatible video drivers. This is created by using cairo-dwrite to attempt to render fonts on an unsupported code path. This corruption causes a potentially exploitable crash on affected systems. References cairo_dwrite_font_face Memory Corruption Vulnerability CVE-2012-0472 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-26 Title: WebGL.drawElements may read illegal video memory due to FindMaxUshortElement error Impact: High Announced: April 24, 2012 Reporter: Matias Juntunen Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Mozilla community member Matias Juntunen discovered an error in WebGLBuffer where FindMaxElementInSubArray receives wrong template arguments from FindMaxUshortElement. This bug causes maximum index to be computed incorrectly within WebGL.drawElements, allowing the reading of illegal video memory. References WebGLBuffer::FindMaxUshortElement passes wrong template arguments to FindMaxElementInSubArray CVE-2012-0473 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-27 Title: Page load short-circuit can lead to XSS Impact: High Announced: April 24, 2012 Reporter: Jordi Chancel, Eddy Bordi, Chris McGowen Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Security researchers Jordi Chancel and Eddy Bordi reported that they could short-circuit page loads to show the address of a different site than what is loaded in the window in the addressbar. Security researcher Chris McGowen independently reported the same flaw, and further demonstrated that this could lead to loading scripts from the attacker's site, leaving users vulnerable to cross-site scripting (XSS) attacks. References universal XSS by confusing docshell with short-circuited loads CVE-2012-0474 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-28 Title: Ambiguous IPv6 in Origin headers may bypass webserver access restrictions Impact: Moderate Announced: April 24, 2012 Reporter: Simone Fabiano Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Thunderbird 12.0 SeaMonkey 2.9 Description Security researcher Simone Fabiano reported that if a cross-site XHR or WebSocket is opened on a web server on a non-standard port for web traffic while using an IPv6 address, the browser will send an ambiguous origin headers if the IPv6 address contains at least 2 consecutive 16-bit fields of zeroes. If there is an origin access control list that uses IPv6 literals, this issue could be used to bypass these access controls on the server. References Ambiguous IPv6 in Origin (and Sec-WebSocket-Origin) request header CVE-2012-0475 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-29 Title: Potential XSS through ISO-2022-KR/ISO-2022-CN decoding issues Impact: Moderate Announced: April 24, 2012 Reporter: Masato Kinugawa Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Security researcher Masato Kinugawa found that during the decoding of ISO-2022-KR and ISO-2022-CN character sets, characters near 1024 bytes are treated incorrectly, either doubling or deleting bytes. On certain pages it might be possible for an attacker to pad the output of the page such that these errors fall in the right place to affect the structure of the page, allowing for cross-site script (XSS) injection. References Potential XSS attack with ISO-2022-KR/ISO-2022-CN near 1024 bytes CVE-2012-0477 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-30 Title: Crash with WebGL content using textImage2D Impact: Critical Announced: April 24, 2012 Reporter: Ms2ger Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Mozilla community member Ms2ger found an image rendering issue with WebGL when texImage2D uses use JSVAL_TO_OBJECT on arbitrary objects. This can lead to a crash on a maliciously crafted web page. While there is no evidence that this is directly exploitable, there is a possibility of remote code execution. References nsIDOMWebGLRenderingContext_Tex{,Sub}Image2D use JSVAL_TO_OBJECT on arbitrary objects CVE-2012-0478 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-31 Title: Off-by-one error in OpenType Sanitizer Impact: Critical Announced: April 24, 2012 Reporter: Mateusz Jurczyk Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Mateusz Jurczyk of the Google Security Team discovered an off-by-one error in the OpenType Sanitizer using the Address Sanitizer tool. This can lead to an out-of-bounds read and execution of an uninitialized function pointer during parsing and possible remote code execution. References OTS off-by-one may result in arbitrary code execution Security: Off-by-one in OTS resulting in arbitrary code execution CVE-2011-3062 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-32 Title: HTTP Redirections and remote content can be read by javascript errors Impact: Moderate Announced: April 24, 2012 Reporter: Daniel Divricean Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Thunderbird 12.0 SeaMonkey 2.9 Description Security researcher Daniel Divricean reported that a defect in the error handling of javascript errors can leak the file names and location of javascript files on a server, leading to inadvertent information disclosure and a vector for further attacks. References HTTP Redirections and remote content can be read by javascript errors CVE-2011-1187 ______________________________________________________________________ Mozilla Foundation Security Advisory 2012-33 Title: Potential site identity spoofing when loading RSS and Atom feeds Impact: High Announced: April 24, 2012 Reporter: Jeroen van der Gun Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 12.0 Firefox ESR 10.0.4 Thunderbird 12.0 Thunderbird ESR 10.0.4 SeaMonkey 2.9 Description Security researcher Jeroen van der Gun reported that if RSS or Atom XML invalid content is loaded over HTTPS, the addressbar updates to display the new location of the loaded resource, including SSL indicators, while the main window still displays the previously loaded content. This allows for phishing attacks where a malicious page can spoof the identify of another seemingly secure site. References Identify spoofing with Atom/RSS content over HTTPS CVE-2012-0479 ====================================================================== ========================================================= Serveur de référence du CERT-Renater https://services.renater.fr/ssi/ ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================