common/extensions/sync_helper.cc in Google Chrome before 28.0.1500.71 proceeds with sync operations for NPAPI extensions without checking for a certain plugin permission setting, which might allow remote attackers to trigger unwanted extension changes via unspecified vectors.

The remote host is affected by the vulnerability described in GLSA-201309-16 (Chromium, V8: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Chromium and V8. Please       review the CVE identifiers and release notes referenced below for       details.
  Impact :

    A context-dependent attacker could entice a user to open a specially       crafted website or JavaScript program using Chromium or V8, possibly       resulting in the execution of arbitrary code with the privileges of the       process or a Denial of Service condition. Furthermore, a remote attacker       may be able to bypass security restrictions or have other, unspecified,       impact.
  Workaround :

    There is no known workaround at this time.

Several vulnerabilities have been discovered in the Chromium web browser.

  - CVE-2013-2853     The HTTPS implementation does not ensure that headers     are terminated by \r\n\r\n (carriage return, newline,     carriage return, newline).

  - CVE-2013-2867     Chrome does not properly prevent pop-under windows.

  - CVE-2013-2868     common/extensions/sync_helper.cc proceeds with sync     operations for NPAPI extensions without checking for a     certain plugin permission setting.

  - CVE-2013-2869     Denial of service (out-of-bounds read) via a crafted     JPEG2000 image.

  - CVE-2013-2870     Use-after-free vulnerability in network sockets.

  - CVE-2013-2871     Use-after-free vulnerability in input handling.

  - CVE-2013-2873     Use-after-free vulnerability in resource loading.

  - CVE-2013-2875     Out-of-bounds read in SVG file handling.

  - CVE-2013-2876     Chromium does not properly enforce restrictions on the     capture of screenshots by extensions, which could lead     to information disclosure from previous page visits.

  - CVE-2013-2877     Out-of-bounds read in XML file handling.

  - CVE-2013-2878     Out-of-bounds read in text handling.

  - CVE-2013-2879     The circumstances in which a renderer process can be     considered a trusted process for sign-in and subsequent     sync operations were not propertly checked.

  - CVE-2013-2880     The Chromium 28 development team found various issues     from internal fuzzing, audits, and other studies.

Versions prior to Google Chrome 28.0.1500.71 are potentially affected by the multiple vulnerabilities, the more serious of which are as follows:

  - Several remote code execution vulnerabilities exist due to use-after-free errors in multiple areas. A remote attacker can leverage this to execute arbitrary code in the context of the application. (CVE-2013-2870, CVE-2013-2871, CVE-2013-2873, CVE-2013-2879)

  - Memory corruption vulnerabilities exist which may be exploitable to induce arbitrary code execution. (CVE-2013-2869, CVE-2013-2878, CVE-2013-2875)

  - Information disclosure vulnerabilities exist that may be exploited by remote attackers to obtain information that can aid in further attacks. (CVE-2013-2853, CVE-2013-2874)

  - A security bypass vulnerability exists due to confusion in extensions permissions, which a remote attacker could exploit to bypass intended security restrictions to perform unauthorized actions. (CVE-2013-2876)

Google Chrome Releases reports :

A special reward for Andrey Labunets for his combination of CVE-2013-2879 and CVE-2013-2868 along with some (since fixed) server-side bugs.

[252216] Low CVE-2013-2867: Block pop-unders in various scenarios.

[252062] High CVE-2013-2879: Confusion setting up sign-in and sync.
Credit to Andrey Labunets.

[252034] Medium CVE-2013-2868: Incorrect sync of NPAPI extension component. Credit to Andrey Labunets.

[245153] Medium CVE-2013-2869: Out-of-bounds read in JPEG2000 handling. Credit to Felix Groebert of Google Security Team.

[244746] [242762] Critical CVE-2013-2870: Use-after-free with network sockets. Credit to Collin Payne.

[244260] Medium CVE-2013-2853: Man-in-the-middle attack against HTTP in SSL. Credit to Antoine Delignat-Lavaud and Karthikeyan Bhargavan from Prosecco at INRIA Paris.

[243991] [243818] High CVE-2013-2871: Use-after-free in input handling. Credit to miaubiz.

[Mac only] [242702] Low CVE-2013-2872: Possible lack of entropy in renderers. Credit to Eric Rescorla.

[241139] High CVE-2013-2873: Use-after-free in resource loading.
Credit to miaubiz.

[233848] Medium CVE-2013-2875: Out-of-bounds-read in SVG. Credit to miaubiz.

[229504] Medium CVE-2013-2876: Extensions permissions confusion with interstitials. Credit to Dev Akhawe.

[229019] Low CVE-2013-2877: Out-of-bounds read in XML parsing. Credit to Aki Helin of OUSPG.

[196636] None: Remove the 'viewsource' attribute on iframes. Credit to Collin Jackson.

[177197] Medium CVE-2013-2878: Out-of-bounds read in text handling.
Credit to Atte Kettunen of OUSPG.

The version of Google Chrome installed on the remote host is a version prior to 28.0.1500.71 and is, therefore, affected by multiple vulnerabilities :

  - A vulnerability exists that exposes HTTP in SSL to a     man-in-the-middle attack. (CVE-2013-2853)

  - Block pop-unders in various scenarios. (CVE-2013-2867)

  - An error exists related to an incorrect sync of the     NPAPI extension component. (CVE-2013-2868)

  - An unspecified flaw exists due to a lack of entropy in     renderers. (CVE-2013-2872)

  - Use-after-free errors exist related to network sockets,     input handling, and resource loading. (CVE-2013-2870,     CVE-2013-2871, CVE-2013-2873)

  - A screen data leak error exists related to GL textures.
    (CVE-2013-2874)

  - An extension permission error exists related to     interstitials.  (CVE-2013-2876)

  - Multiple out-of-bounds errors exist related to JPEG2000,     SVG, text handling and XML parsing.  (CVE-2013-2869,     CVE-2013-2875, CVE-2013-2877, CVE-2013-2878)

  - An unspecified error exists when setting up sign-in and     sync. (CVE-2013-2879)

  - The vendor reports various, unspecified errors exist.
    (CVE-2013-2880)

ID	Name	Product	Family	Severity
70112	GLSA-201309-16 : Chromium, V8: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
68970	Debian DSA-2724-1 : chromium-browser - several vulnerabilities	Nessus	Debian Local Security Checks	high
801411	Google Chrome < 28.0.1500.71 Multiple Security Vulnerabilities	Log Correlation Engine	Web Clients	high
67237	FreeBSD : chromium -- multiple vulnerabilities (3b80104f-e96c-11e2-8bac-00262d5ed8ee)	Nessus	FreeBSD Local Security Checks	high
67232	Google Chrome < 28.0.1500.71 Multiple Vulnerabilities	Nessus	Windows	high

Detections

Analytics

CVE-2013-2868

high

Tenable Plugins

critical

high

high

high

high