CVE-2015-4474

Mozilla Firefox was updated to version 38.2.1 ESR to fix several critical and non critical security vulnerabilities.

• Firefox was updated to 38.2.1 ESR (bsc#943608)

  • MFSA 2015-94/CVE-2015-4497 (bsc#943557) Use-after-free when resizing canvas element during restyling
  • MFSA 2015-95/CVE-2015-4498 (bsc#943558) Add-on notification bypass through data URLs

• Firefox was updated to 38.2.0 ESR (bsc#940806)

  • MFSA 2015-78/CVE-2015-4495 (bmo#1178058, bmo#1179262) Same origin violation and local file stealing via PDF reader
  • MFSA 2015-79/CVE-2015-4473/CVE-2015-4474 (bmo#1143130, bmo#1161719, bmo#1177501, bmo#1181204, bmo#1184068, bmo#1188590, bmo#1146213, bmo#1178890, bmo#1182711) Miscellaneous memory safety hazards (rv:40.0 / rv:38.2)
  • MFSA 2015-80/CVE-2015-4475 (bmo#1175396) Out-of-bounds read with malformed MP3 file
  • MFSA 2015-82/CVE-2015-4478 (bmo#1105914) Redefinition of non-configurable JavaScript object properties
  • MFSA 2015-83/CVE-2015-4479 (bmo#1185115, bmo#1144107, bmo#1170344, bmo#1186718) Overflow issues in libstagefright
  • MFSA 2015-87/CVE-2015-4484 (bmo#1171540) Crash when using shared memory in JavaScript
  • MFSA 2015-88/CVE-2015-4491 (bmo#1184009) Heap overflow in gdk-pixbuf when scaling bitmap images
  • MFSA 2015-89/CVE-2015-4485/CVE-2015-4486 (bmo#1177948, bmo#1178148) Buffer overflows on Libvpx when decoding WebM video
  • MFSA 2015-90/CVE-2015-4487/CVE-2015-4488/CVE-2015-4489 (bmo#1176270, bmo#1182723, bmo#1171603) Vulnerabilities found through code inspection
  • MFSA 2015-92/CVE-2015-4492 (bmo#1185820) Use-after-free in XMLHttpRequest with shared workers

Mozilla NSS switched the CKBI ABI from 1.98 to 2.4, which is what Firefox 38ESR uses.

Mozilla Firefox is being updated to the current Firefox 38ESR branch (specifically the 38.2.0ESR release).

Security issues fixed:

• MFSA 2015-78 / CVE-2015-4495: Same origin violation and local file stealing via PDF reader
• MFSA 2015-79 / CVE-2015-4473/CVE-2015-4474: Miscellaneous memory safety hazards (rv:40.0 / rv:38.2)
• MFSA 2015-80 / CVE-2015-4475: Out-of-bounds read with malformed MP3 file
• MFSA 2015-82 / CVE-2015-4478: Redefinition of non-configurable JavaScript object properties
• MFSA 2015-83 / CVE-2015-4479: Overflow issues in libstagefright
• MFSA 2015-87 / CVE-2015-4484: Crash when using shared memory in JavaScript
• MFSA 2015-88 / CVE-2015-4491: Heap overflow in gdk-pixbuf when scaling bitmap images
• MFSA 2015-89 / CVE-2015-4485/CVE-2015-4486: Buffer overflows on Libvpx when decoding WebM video
• MFSA 2015-90 / CVE-2015-4487/CVE-2015-4488/CVE-2015-4489: Vulnerabilities found through code inspection
• MFSA 2015-92 / CVE-2015-4492: Use-after-free in XMLHttpRequest with shared workers

This update also contains a lot of feature improvements and bug fixes from 31ESR to 38ESR.

Also the Mozilla NSS library switched its CKBI API from 1.98 to 2.4, which is what Firefox 38ESR uses.

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 40.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley, Chris Coulson, and Eric Rahm discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-4473, CVE-2015-4474)

Aki Helin discovered an out-of-bounds read when playing malformed MP3 content in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information, cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-4475)

A use-after-free was discovered during MediaStream playback in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash or execute arbitrary code with the priviliges of the user invoking Firefox. (CVE-2015-4477)

André Bargull discovered that non-configurable properties on javascript objects could be redefined when parsing JSON. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2015-4478)

Multiple integer overflows were discovered in libstagefright. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-4479, CVE-2015-4480, CVE-2015-4493)

Jukka Jylänki discovered a crash that occurs because javascript does not properly gate access to Atomics or SharedArrayBuffers in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service. (CVE-2015-4484)

Abhishek Arya discovered 2 buffer overflows in libvpx when decoding malformed WebM content in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-4485, CVE-2015-4486)

Ronald Crane reported 3 security issues. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these, in combination with another security vulnerability, to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-4487, CVE-2015-4488, CVE-2015-4489)

Christoph Kerschbaumer discovered an issue with Mozilla's implementation of Content Security Policy (CSP), which could allow for a more permissive usage in some cirucumstances. An attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2015-4490)

Gustavo Grieco discovered a heap overflow in gdk-pixbuf. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash or execute arbitrary code with the priviliges of the user invoking Firefox. (CVE-2015-4491)

Looben Yang discovered a use-after-free when using XMLHttpRequest with shared workers in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash or execute arbitrary code with the priviliges of the user invoking Firefox. (CVE-2015-4492)