Use-after-free vulnerability in the matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data.

Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library. A full list of the changes is available at

chromium was updated to version 40.0.2214.111 to fix 31 vulnerabilities.

These security issues were fixed :

  - CVE-2015-1209: Use-after-free in DOM (bnc#916841).

  - CVE-2015-1210: Cross-origin-bypass in V8 bindings     (bnc#916843).

  - CVE-2015-1211: Privilege escalation using service     workers (bnc#916838).

  - CVE-2015-1212: Various fixes from internal audits,     fuzzing and other initiatives (bnc#916840).

  - CVE-2014-7923: Memory corruption in ICU (bnc#914468).

  - CVE-2014-7924: Use-after-free in IndexedDB (bnc#914468).

  - CVE-2014-7925: Use-after-free in WebAudio (bnc#914468).

  - CVE-2014-7926: Memory corruption in ICU (bnc#914468).

  - CVE-2014-7927: Memory corruption in V8 (bnc#914468).

  - CVE-2014-7928: Memory corruption in V8 (bnc#914468).

  - CVE-2014-7930: Use-after-free in DOM (bnc#914468).

  - CVE-2014-7931: Memory corruption in V8 (bnc#914468).

  - CVE-2014-7929: Use-after-free in DOM (bnc#914468).

  - CVE-2014-7932: Use-after-free in DOM (bnc#914468).

  - CVE-2014-7933: Use-after-free in FFmpeg (bnc#914468).

  - CVE-2014-7934: Use-after-free in DOM (bnc#914468).

  - CVE-2014-7935: Use-after-free in Speech (bnc#914468).

  - CVE-2014-7936: Use-after-free in Views (bnc#914468).

  - CVE-2014-7937: Use-after-free in FFmpeg (bnc#914468).

  - CVE-2014-7938: Memory corruption in Fonts (bnc#914468).

  - CVE-2014-7939: Same-origin-bypass in V8 (bnc#914468).

  - CVE-2014-7940: Uninitialized-value in ICU (bnc#914468).

  - CVE-2014-7941: Out-of-bounds read in UI (bnc#914468).

  - CVE-2014-7942: Uninitialized-value in Fonts     (bnc#914468).

  - CVE-2014-7943: Out-of-bounds read in Skia

  - CVE-2014-7944: Out-of-bounds read in PDFium

  - CVE-2014-7945: Out-of-bounds read in PDFium

  - CVE-2014-7946: Out-of-bounds read in Fonts

  - CVE-2014-7947: Out-of-bounds read in PDFium

  - CVE-2014-7948: Caching error in AppCache

  - CVE-2015-1205: Various fixes from internal audits,     fuzzing and other initiatives

These non-security issues were fixed :

  - Fix using 'echo' command in chromium-browser.sh script

The remote host is affected by the vulnerability described in GLSA-201502-13 (Chromium: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Chromium. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker may be able to cause a Denial of Service condition,       gain privileges via a filesystem: URI, or have other unspecified impact.
  Workaround :

    There is no known workaround at this time.

Updated chromium-browser packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 Supplementary.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Chromium is an open source web browser, powered by WebKit (Blink).

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Chromium to crash or, potentially, execute arbitrary code with the privileges of the user running Chromium. (CVE-2014-7923, CVE-2014-7924, CVE-2014-7925, CVE-2014-7926, CVE-2014-7927, CVE-2014-7928, CVE-2014-7929, CVE-2014-7930, CVE-2014-7931, CVE-2014-7932, CVE-2014-7933, CVE-2014-7934, CVE-2014-7935, CVE-2014-7936, CVE-2014-7937, CVE-2014-7938, CVE-2014-7939, CVE-2014-7940, CVE-2014-7941, CVE-2014-7942, CVE-2014-7943, CVE-2014-7944, CVE-2014-7945, CVE-2014-7946, CVE-2014-7947, CVE-2014-7948)

All Chromium users should upgrade to these updated packages, which contain Chromium version 40.0.2214.91, which corrects these issues.
After installing the update, Chromium must be restarted for the changes to take effect.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2476-1 advisory.

    Several memory corruption bugs were discovered in ICU. 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 renderer     crash or execute arbitrary code with the privileges of the sandboxed render process. (CVE-2014-7923,     CVE-2014-7926)

    A use-after-free was discovered in the IndexedDB implementation. 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 privileges of the user invoking the program.
    (CVE-2014-7924)

    A use-after free was discovered in the WebAudio implementation in Blink. 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 renderer crash or execute arbitrary code with the privileges of the sandboxed render process.
    (CVE-2014-7925)

    Several memory corruption bugs were discovered in V8. 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 renderer     crash or execute arbitrary code with the privileges of the sandboxed render process. (CVE-2014-7927,     CVE-2014-7928, CVE-2014-7931)

    Several use-after free bugs were discovered in the DOM implementation in Blink. 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 renderer crash or execute arbitrary code with the privileges of the sandboxed render process.
    (CVE-2014-7929, CVE-2014-7930, CVE-2014-7932, CVE-2014-7934)

    A use-after free was discovered in FFmpeg. 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 renderer crash or     execute arbitrary code with the privileges of the sandboxed render process. (CVE-2014-7933)

    Multiple off-by-one errors were discovered in FFmpeg. 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 renderer     crash or execute arbitrary code with the privileges of the sandboxed render process. (CVE-2014-7937)

    A memory corruption bug was discovered in the fonts implementation. 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     renderer crash or execute arbitrary code with the privileges of the sandboxed render process.
    (CVE-2014-7938)

    It was discovered that ICU did not initialize memory for a data structure correctly. 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 renderer crash or execute arbitrary code with the privileges of the sandboxed render     process. (CVE-2014-7940)

    It was discovered that the fonts implementation did not initialize memory for a data structure correctly.
    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 renderer crash or execute arbitrary code with the privileges of the     sandboxed render process. (CVE-2014-7942)

    An out-of-bounds read was discovered in Skia. 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 renderer crash.
    (CVE-2014-7943)

    An out-of-bounds read was discovered in Blink. 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 renderer crash.
    (CVE-2014-7946)

    It was discovered that the AppCache proceeded with caching for SSL sessions even if there is a certificate     error. A remote attacker could potentially exploit this by conducting a MITM attack to modify HTML     application content. (CVE-2014-7948)

    Multiple security issues were discovered in Chromium. If a user were tricked in to opening a specially     crafted website, an attacker could potentially exploit these to read uninitialized memory, cause a denial     of service via application crash or execute arbitrary code with the privileges of the user invoking the     program. (CVE-2015-1205)

    Multiple security issues were discovered in V8. If a user were tricked in to opening a specially crafted     website, an attacker could potentially exploit these to read uninitialized memory, cause a denial of     service via renderer crash or execute arbitrary code with the privileges of the sandboxed render process.
    (CVE-2015-1346)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Google Chrome installed on the remote Windows host is a version prior to 40.0.2214.91. It is, therefore, affected by vulnerabilities in the following components :

  - AppCache
  - DOM
  - FFmpeg
  - Fonts
  - ICU
  - IndexedDB
  - PDFium
  - Skia
  - Speech
  - UI
  - V8
  - Views
  - WebAudio

The version of Google Chrome installed on the remote Mac OS X host is a version prior to 40.0.2214.91. It is, therefore, affected by vulnerabilities in the following components :

  - AppCache
  - DOM
  - FFmpeg
  - Fonts
  - ICU
  - IndexedDB
  - PDFium
  - Skia
  - Speech
  - UI
  - V8
  - Views
  - WebAudio

Google Chrome Releases reports :

62 security fixes in this release, including :

- [430353] High CVE-2014-7923: Memory corruption in ICU. Credit to yangdingning.

- [435880] High CVE-2014-7924: Use-after-free in IndexedDB. Credit to Collin Payne.

- [434136] High CVE-2014-7925: Use-after-free in WebAudio. Credit to mark.buer.

- [422824] High CVE-2014-7926: Memory corruption in ICU. Credit to yangdingning.

- [444695] High CVE-2014-7927: Memory corruption in V8. Credit to Christian Holler.

- [435073] High CVE-2014-7928: Memory corruption in V8. Credit to Christian Holler.

- [442806] High CVE-2014-7930: Use-after-free in DOM. Credit to cloudfuzzer.

- [442710] High CVE-2014-7931: Memory corruption in V8. Credit to cloudfuzzer.

- [443115] High CVE-2014-7929: Use-after-free in DOM. Credit to cloudfuzzer.

- [429666] High CVE-2014-7932: Use-after-free in DOM. Credit to Atte Kettunen of OUSPG.

- [427266] High CVE-2014-7933: Use-after-free in FFmpeg. Credit to aohelin.

- [427249] High CVE-2014-7934: Use-after-free in DOM. Credit to cloudfuzzer.

- [402957] High CVE-2014-7935: Use-after-free in Speech. Credit to Khalil Zhani.

- [428561] High CVE-2014-7936: Use-after-free in Views. Credit to Christoph Diehl.

- [419060] High CVE-2014-7937: Use-after-free in FFmpeg. Credit to Atte Kettunen of OUSPG.

- [416323] High CVE-2014-7938: Memory corruption in Fonts. Credit to Atte Kettunen of OUSPG.

- [399951] High CVE-2014-7939: Same-origin-bypass in V8. Credit to Takeshi Terada.

- [433866] Medium CVE-2014-7940: Uninitialized-value in ICU. Credit to miaubiz.

- [428557] Medium CVE-2014-7941: Out-of-bounds read in UI. Credit to Atte Kettunen of OUSPG and Christoph Diehl.

- [426762] Medium CVE-2014-7942: Uninitialized-value in Fonts. Credit to miaubiz.

- [422492] Medium CVE-2014-7943: Out-of-bounds read in Skia. Credit to Atte Kettunen of OUSPG.

- [418881] Medium CVE-2014-7944: Out-of-bounds read in PDFium. Credit to cloudfuzzer.

- [414310] Medium CVE-2014-7945: Out-of-bounds read in PDFium. Credit to cloudfuzzer.

- [414109] Medium CVE-2014-7946: Out-of-bounds read in Fonts. Credit to miaubiz.

- [430566] Medium CVE-2014-7947: Out-of-bounds read in PDFium. Credit to fuzztercluck.

- [414026] Medium CVE-2014-7948: Caching error in AppCache. Credit to jiayaoqijia.

- [449894] CVE-2015-1205: Various fixes from internal audits, fuzzing and other initiatives.

- Multiple vulnerabilities in V8 fixed at the tip of the 3.30 branch (currently 3.30.33.15).

ID	Name	Product	Family	Severity
81833	Debian DSA-3189-1 : libav - security update	Nessus	Debian Local Security Checks	high
81692	openSUSE Security Update : chromium (openSUSE-2015-204)	Nessus	SuSE Local Security Checks	high
81396	GLSA-201502-13 : Chromium: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
81035	RHEL 6 : chromium-browser (RHSA-2015:0093)	Nessus	Red Hat Local Security Checks	high
81016	Ubuntu 14.04 LTS : Oxide vulnerabilities (USN-2476-1)	Nessus	Ubuntu Local Security Checks	critical
80951	Google Chrome < 40.0.2214.91 Multiple Vulnerabilities	Nessus	Windows	high
80950	Google Chrome < 40.0.2214.91 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	high
80898	FreeBSD : chromium -- multiple vulnerabilities (e30e0c99-a1b7-11e4-b85c-00262d5ed8ee)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2014-7933

high

Tenable Plugins

high

high

high

high

critical

high

high

high