Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp in the DOM implementation in Blink, as used in Google Chrome before 42.0.2311.135, allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering an attempt to unregister a MutationObserver object that is not currently registered.

The remote host is affected by the vulnerability described in GLSA-201506-04 (Chromium: Multiple vulnerabilities)

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

    A remote attacker can cause arbitrary remote code execution, Denial of       Service or bypass of security mechanisms.
  Workaround :

    There is no known workaround at this time.

The version of Google Chrome on the remote host is prior to 42.0.2311.135 and is affected by the following vulnerabilities :

  - A use-after-free condition in the 'MutationObserver::disconnect()' function in 'dom/MutationObserver.cpp'. The issue is triggered when iterating over a cloned set and attempting to unregister a MutationObserver registration already unregistered from the original set. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and potentially execute arbitrary code. (CVE-2015-1243)

  - A flaw exists in 'media/audio/audio_parameters.cc' that is triggered when handling channel counts that do not match the channel layout. This may allow a context-dependent attacker to potentially execute arbitrary code.

  - A flaw exists that is triggered when handling audio conversion with certain channel layouts. This may allow a context-dependent attacker to potentially execute arbitrary code.

  - A flaw exists in the 'HTMLImportTreeRoot::recalcTimerFired()' function in 'html/imports/HTMLImportTreeRoot.cpp'. With a specially crafted web page, a context-dependent attacker can potentially execute arbitrary code.

  - OpenJPEG as used in Google Chrome contains an integer overflow condition in the 'opj_j2k_update_image_data()' function in 'j2k.c' that is triggered when handling overly large image dimensions. This may allow a context-dependent attacker to cause a heap-based buffer overflow, crashing an application linked against the library or potentially allow execution of arbitrary code. (CVE-2015-1250)

Chromium was updated to 42.0.2311.135 to fix security issues and bugs.

The following vulnerabilities were fixed :

  - CVE-2015-1243: Use-after-free in DOM

  - CVE-2015-1250: Various fixes from internal audits,     fuzzing and other initiatives.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2582-1 advisory.

    A use-after-free was discovered in the DOM 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-2015-1243)

    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-2015-1250)

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.

Several vulnerabilities were discovered in the chromium web browser :

  - CVE-2015-1243     Saif El-Sherei discovered a use-after-free issue.

  - CVE-2015-1250     The chrome 42 team found and fixed multiple issues     during internal auditing.

Updated chromium-browser packages that fix multiple security issues and one bug 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-2015-1243, CVE-2015-1250)

This update also fixes the following bug :

* Prior to this update, Chromium did not accept GNOME's system proxy settings due to having GConf support disabled. This issue has been resolved in this update. (BZ#1217065)

All Chromium users should upgrade to these updated packages, which contain Chromium version 42.0.2311.135, which corrects these issues.
After installing the update, Chromium must be restarted for the changes to take effect.

The version of Google Chrome installed on the remote Mac OS X host is prior to 42.0.2311.135. It is, therefore, affected by multiple vulnerabilities :

  - An unspecified user-after-free memory error exists in     DOM. (CVE-2015-1243)

  - Other unspecified errors exists. No other details are     available. (CVE-2015-1250)

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 prior to 42.0.2311.135. It is, therefore, affected by multiple vulnerabilities :

  - An unspecified user-after-free memory error exists in     DOM. (CVE-2015-1243)

  - Other unspecified errors exists. No other details are     available. (CVE-2015-1250)

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

Google Chrome Releases reports :

5 security fixes in this release, including :

- [453279] High CVE-2015-1243: Use-after-free in DOM. Credit to Saif El-Sherei.

- [481777] CVE-2015-1250: Various fixes from internal audits, fuzzing and other initiatives.

ID	Name	Product	Family	Severity
84332	GLSA-201506-04 : Chromium: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
8779	Google Chrome < 42.0.2311.135 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
83393	openSUSE Security Update : Chromium (openSUSE-2015-354)	Nessus	SuSE Local Security Checks	high
83277	Ubuntu 14.04 LTS : Oxide vulnerabilities (USN-2582-1)	Nessus	Ubuntu Local Security Checks	high
83191	Debian DSA-3242-1 : chromium-browser - security update	Nessus	Debian Local Security Checks	high
83173	RHEL 6 : chromium-browser (RHSA-2015:0921)	Nessus	Red Hat Local Security Checks	high
83137	Google Chrome < 42.0.2311.135 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	high
83136	Google Chrome < 42.0.2311.135 Multiple Vulnerabilities	Nessus	Windows	high
83130	FreeBSD : chromium -- multiple vulnerabilities (210f80b9-ede4-11e4-81c4-00262d5ed8ee)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2015-1243

high

Tenable Plugins

high

high

high

high

high

high

high

high

high