CVE-2015-4491

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-2015-4473, CVE-2015-4475, CVE-2015-4478, CVE-2015-4479, CVE-2015-4480, CVE-2015-4493, CVE-2015-4484, CVE-2015-4491, CVE-2015-4485, CVE-2015-4486, CVE-2015-4487, CVE-2015-4488, CVE-2015-4489, CVE-2015-4492)

Security researcher Gustavo Grieco reported a heap overflow in gdk-pixbuf. This issue is triggered by the scaling of a malformed bitmap format image and results in a potentially exploitable crash (CVE-2015-4491).

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird (CVE-2015-4473, CVE-2015-4491, CVE-2015-4487, CVE-2015-4488, CVE-2015-4489).

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the gdk-pixbuf-devel-2.36.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

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

The following vulnerabilities were fixed in ESR31 and are also included here:

• CVE-2015-2724/CVE-2015-2725/CVE-2015-2726: Miscellaneous memory safety hazards (bsc#935979).
• CVE-2015-2728: Type confusion in Indexed Database Manager (bsc#935979).
• CVE-2015-2730: ECDSA signature validation fails to handle some signatures correctly (bsc#935979).
• CVE-2015-2722/CVE-2015-2733: Use-after-free in workers while using XMLHttpRequest (bsc#935979).
• CVE-2015-2734/CVE-2015-2735/CVE-2015-2736/CVE-2015-2737/CVE-2015-2738/CVE-2015-2739/CVE-2015-2740: Vulnerabilities found through code inspection (bsc#935979).
• CVE-2015-2743: Privilege escalation in PDF.js (bsc#935979).
• CVE-2015-4000: NSS accepts export-length DHE keys with regular DHE cipher suites (bsc#935033).
• CVE-2015-2721: NSS incorrectly permits skipping of ServerKeyExchange (bsc#935979).

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.

Mozilla Firefox and mozilla-nss were updated to fix 17 security issues.

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.

gtk2 was updated to fix two security issues.

These security issues were fixed:

• CVE-2015-4491: Integer overflow in the make_filter_table function in pixops/pixops.c in gdk-pixbuf before 2.31.5, allowed remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow and application crash) via crafted bitmap dimensions that were mishandled during scaling (bsc#942801).
• CVE-2015-7674: Fix overflow when scaling GIF files (bsc#948791).

This non-security issue was fixed:

• Add the script which generates gdk-pixbuf64.loaders to the spec file (bsc#922741).

The gdk pixbuf library was updated to fix three security issues.

These security issues were fixed:

• CVE-2015-7673: Fix some more overflows scaling a gif (bsc#948791)
• CVE-2015-4491: Check for overflow before allocating memory when scaling (bsc#942801)
• CVE-2015-7673: Fix an overflow and DoS when scaling TGA files (bsc#948790).
• CVE-2015-7674: Fix overflow when scaling GIF files(bsc#948791).

The gdk pixbuf library was updated to fix three security issues.

These security issues were fixed:

• CVE-2015-7673: Fix some more overflows scaling a gif (bsc#948791)
• CVE-2015-4491: Check for overflow before allocating memory when scaling (bsc#942801)
• CVE-2015-7673: Fix an overflow and DoS when scaling TGA files (bsc#948790).
• CVE-2015-7674: Fix overflow when scaling GIF files(bsc#948791).

This update for gdk-pixbuf fixes the following issues:

Security issue fixed:

• CVE-2015-4491: Fix integer multiplication overflow that allows for DoS or potentially RCE (bsc#1053417).

Integer overflow in the make_filter_table function in pixops/pixops.c in gdk-pixbuf before 2.31.5, as used in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 on Linux, Google Chrome on Linux, and other products, allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow and application crash) via crafted bitmap dimensions that are mishandled during scaling.

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)

Gary Kwong, Christian Holler, and Byron Campen discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges ofthe user invoking Thunderbird. (CVE-2015-4473)

Ronald Crane reported 3 security issues. If a user were tricked in to opening a specially crafted message, 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 Thunderbird. (CVE-2015-4487, CVE-2015-4488, CVE-2015-4489)

Gustavo Grieco discovered a heap overflow in gdk-pixbuf. If a user were tricked in to opening a specially crafted message, 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 Thunderbird. (CVE-2015-4491)

Gustavo Grieco discovered that GDK-PixBuf incorrectly handled scaling bitmap images. If a user or automated system were tricked into opening a BMP image file, a remote attacker could use this flaw to cause GDK-PixBuf to crash, resulting in a denial of service, or possibly execute arbitrary code.