Double free vulnerability in libxslt, as used in Google Chrome before 22.0.1229.79, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to XSL transforms.

The remote Solaris system is missing necessary patches to address security updates :

  - The xsltGenerateIdFunction function in functions.c in     libxslt 1.1.26 and earlier, as used in Google Chrome     before 10.0.648.127 and other products, allows remote     attackers to obtain potentially sensitive information     about heap memory addresses via an XML document     containing a call to the XSLT generate-id XPath     function. (CVE-2011-1202)

  - The XSL implementation in Google Chrome before     20.0.1132.43 allows remote attackers to cause a denial     of service (incorrect read operation) via unspecified     vectors. (CVE-2012-2825)

  - libxslt 1.1.26 and earlier, as used in Google Chrome     before 21.0.1180.89, does not properly manage memory,     which might allow remote attackers to cause a denial of     service (application crash) via a crafted XSLT     expression that is not properly identified during XPath     navigation, related to (1) the     xsltCompileLocationPathPattern function in     libxslt/pattern.c and (2) the xsltGenerateIdFunction     function in libxslt/functions.c. (CVE-2012-2870)

  - libxml2 2.9.0-rc1 and earlier, as used in Google Chrome     before 21.0.1180.89, does not properly support a cast of     an unspecified variable during handling of XSL     transforms, which allows remote attackers to cause a     denial of service or possibly have unknown other impact     via a crafted document, related to the _xmlNs data     structure in include/libxml/tree.h. (CVE-2012-2871)

  - Double free vulnerability in libxslt, as used in Google     Chrome before 22.0.1229.79, allows remote attackers to     cause a denial of service or possibly have unspecified     other impact via vectors related to XSL transforms.
    (CVE-2012-2893)

Chromium was upgraded to version 24.0.1290 which fixed multiple security flaws.

The remote host is affected by the vulnerability described in GLSA-201401-07 (libxslt: Denial of Service)

    Multiple vulnerabilities have been found in libxslt:
      Multiple errors exist in pattern.c and functions.c (CVE-2012-2870,         CVE-2012-6139).
      A double-free error exists in templates.c (CVE-2012-2893).
      A NULL pointer dereference in keys.c (CVE-2012-6139).
      An error in handling stylesheets containing DTDs (CVE-2013-4520).
  Impact :

    A remote attacker could entice a user to process a specially crafted       file in an application linked against libxslt, possibly resulting in a       Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

From Red Hat Security Advisory 2012:1265 :

Updated libxslt packages that fix several security issues are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team 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.

libxslt is a library for transforming XML files into other textual formats (including HTML, plain text, and other XML representations of the underlying data) using the standard XSLT stylesheet transformation mechanism.

A heap-based buffer overflow flaw was found in the way libxslt applied templates to nodes selected by certain namespaces. An attacker could use this flaw to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application.
(CVE-2012-2871)

Several denial of service flaws were found in libxslt. An attacker could use these flaws to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash. (CVE-2012-2825, CVE-2012-2870, CVE-2011-3970)

An information leak could occur if an application using libxslt processed an untrusted XPath expression, or used a malicious XSL file to perform an XSL transformation. If combined with other flaws, this leak could possibly help an attacker bypass intended memory corruption protections. (CVE-2011-1202)

All libxslt users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. All running applications linked against libxslt must be restarted for this update to take effect.

A vulnerability has been discovered and corrected in libxslt :

The XSL implementation in libxslt allows remote attackers to cause a denial of service (incorrect read operation) via unspecified vectors (CVE-2012-2825).

libxslt 1.1.26 and earlier does not properly manage memory, which might allow remote attackers to cause a denial of service (application crash) via a crafted XSLT expression that is not properly identified during XPath navigation, related to (1) the xsltCompileLocationPathPattern function in libxslt/pattern.c and (2) the xsltGenerateIdFunction function in libxslt/functions.c (CVE-2012-2870).

libxml2 2.9.0-rc1 and earlier does not properly support a cast of an unspecified variable during handling of XSL transforms, which allows remote attackers to cause a denial of service or possibly have unknown other impact via a crafted document, related to the _xmlNs data structure in include/libxml/tree.h (CVE-2012-2871).

Double free vulnerability in libxslt allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to XSL transforms (CVE-2012-2893).

The updated packages have been patched to correct these issues.

Multiple vulnerabilities has been discovered and corrected in libxslt :

Unspecified vulnerability in XSLT allows remote attackers to obtain potentially sensitive information about heap memory addresses via unknown vectors (CVE-2011-1202).

libxslt 1.1.26 and earlier does not properly manage memory, which might allow remote attackers to cause a denial of service (application crash) via a crafted XSLT expression that is not properly identified during XPath navigation, related to (1) the xsltCompileLocationPathPattern function in libxslt/pattern.c and (2) the xsltGenerateIdFunction function in libxslt/functions.c (CVE-2012-2870).

libxml2 2.9.0-rc1 and earlier does not properly support a cast of an unspecified variable during handling of XSL transforms, which allows remote attackers to cause a denial of service or possibly have unknown other impact via a crafted document, related to the _xmlNs data structure in include/libxml/tree.h (CVE-2012-2871).

Double free vulnerability in libxslt allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to XSL transforms (CVE-2012-2893).

The updated packages have been patched to correct these issues.

Nicholas Gregoire and Cris Neckar discovered several memory handling bugs in libxslt, which could lead to denial of service or the execution of arbitrary code if a malformed document is processed.

Chris Evans discovered that libxslt incorrectly handled generate-id XPath functions. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could obtain potentially sensitive information. This issue only affected Ubuntu 8.04 LTS, Ubuntu 10.04 LTS and Ubuntu 11.04. (CVE-2011-1202)

It was discovered that libxslt incorrectly parsed certain patterns. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2011-3970)

Nicholas Gregoire discovered that libxslt incorrectly handled unexpected DTD nodes. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2012-2825)

Nicholas Gregoire discovered that libxslt incorrectly managed memory.
If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. (CVE-2012-2870)

Nicholas Gregoire discovered that libxslt incorrectly handled certain transforms. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code. (CVE-2012-2871)

Cris Neckar discovered that libxslt incorrectly managed memory. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code.
(CVE-2012-2893).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Google Chrome Releases reports :

[143439] High CVE-2012-2889: UXSS in frame handling. Credit to Sergey Glazunov.

[143437] High CVE-2012-2886: UXSS in v8 bindings. Credit to Sergey Glazunov.

[139814] High CVE-2012-2881: DOM tree corruption with plug-ins. Credit to Chamal de Silva.

[135432] High CVE-2012-2876: Buffer overflow in SSE2 optimizations.
Credit to Atte Kettunen of OUSPG.

[140803] High CVE-2012-2883: Out-of-bounds write in Skia. Credit to Atte Kettunen of OUSPG.

[143609] High CVE-2012-2887: Use-after-free in onclick handling.
Credit to Atte Kettunen of OUSPG.

[143656] High CVE-2012-2888: Use-after-free in SVG text references.
Credit to miaubiz.

[144899] High CVE-2012-2894: Crash in graphics context handling.
Credit to Slawomir Blazek.

[137707] Medium CVE-2012-2877: Browser crash with extensions and modal dialogs. Credit to Nir Moshe.

[139168] Low CVE-2012-2879: DOM topology corruption. Credit to pawlkt.

[141651] Medium CVE-2012-2884: Out-of-bounds read in Skia. Credit to Atte Kettunen of OUSPG.

[132398] High CVE-2012-2874: Out-of-bounds write in Skia. Credit to Google Chrome Security Team (Inferno).

[134955] [135488] [137106] [137288] [137302] [137547] [137556] [137606] [137635] [137880] [137928] [144579] [145079] [145121] [145163] [146462] Medium CVE-2012-2875: Various lower severity issues in the PDF viewer. Credit to Mateusz Jurczyk of Google Security Team, with contributions by Gynvael Coldwind of Google Security Team.

[137852] High CVE-2012-2878: Use-after-free in plug-in handling.
Credit to Fermin Serna of Google Security Team.

[139462] Medium CVE-2012-2880: Race condition in plug-in paint buffer.
Credit to Google Chrome Security Team (Cris Neckar).

[140647] High CVE-2012-2882: Wild pointer in OGG container handling.
Credit to Google Chrome Security Team (Inferno).

[142310] Medium CVE-2012-2885: Possible double free on exit. Credit to the Chromium development community.

[143798] [144072] [147402] High CVE-2012-2890: Use-after-free in PDF viewer. Credit to Mateusz Jurczyk of Google Security Team, with contributions by Gynvael Coldwind of Google Security Team.

[144051] Low CVE-2012-2891: Address leak over IPC. Credit to Lei Zhang of the Chromium development community.

[144704] Low CVE-2012-2892: Pop-up block bypass. Credit to Google Chrome Security Team (Cris Neckar).

[144799] High CVE-2012-2893: Double free in XSL transforms. Credit to Google Chrome Security Team (Cris Neckar).

[145029] [145157] [146460] High CVE-2012-2895: Out-of-bounds writes in PDF viewer. Credit to Mateusz Jurczyk of Google Security Team, with contributions by Gynvael Coldwind of Google Security Team.

Versions of Google Chrome earlier than 22.0.1229.79 are potentially affected by the following vulnerabilities :

  - Out-of-bounds write errors exist related to Skia and the PDF viewer. (CVE-2012-2874, CVE-2012-2883, CVE-2012-2895)

  - Various, unspecified errors exist related to the PDF viewer. (CVE-2012-2875)

  - A buffer overflow error exists related to 'SSE2' optimizations. (CVE-2012-2876)

  - An unspecified error exists related to extensions and modal dialogs that can allow application crashes. (CVE-2012-2877)

  - Use-after-free errors exist related to plugin handling, 'onclick' handling, 'SVG' text references and the PDF viewer. (CVE-2012-2878, CVE-2012-2887, CVE-2012-2888, CVE-2012-2890)

  - An error exists related to 'DOM' topology corruption. (CVE-2012-2879)

  - Race conditions exist in the plugin paint buffer. (CVE-2012-2880)

  - 'DOM' tree corruption can occur with plugins. (CVE-2012-2881)

  - A pointer error exists related to 'OGG' container handling. (CVE-2012-2882)- An out-of-bounds read error exists related to Skia. (CVE-2012-2884)

  - The possibility of a double-free error exists related to application exit. (CVE-2012-2885)

  - Universal cross-site scripting issues exist related to the v8 JavaScript engine bindings and frame handling. (CVE-2012-2886, CVE-2012-2889)

  - Address information can be leaked via inter process communication (IPC). (CVE-2012-2891)

  - A bypass error exists related to pop-up block. (CVE-2012-2892)

  - A double-free error exists related to 'XSL' transforms. (CVE-2012-2893)

  - An error exists related to graphics context handling. (CVE-2012-2894)

  - An integer overflow error exists related to 'WebGL'. (CVE-2012-2896)
Successful exploitation of any of these issues could lead to an application crash or even allow arbitrary code execution, subject to the user's privileges.

The version of Google Chrome installed on the remote host is earlier than 22.0.1229.79 and is, therefore, affected by the following vulnerabilities :

  - Out-of-bounds write errors exist related to Skia and     the PDF viewer. (CVE-2012-2874, CVE-2012-2883,     CVE-2012-2895)

  - Various, unspecified errors exist related to the PDF     viewer. (CVE-2012-2875)

  - A buffer overflow error exists related to 'SSE2'     optimizations. (CVE-2012-2876)

  - An unspecified error exists related to extensions and     modal dialogs that can allow application crashes.
    (CVE-2012-2877)

  - Use-after-free errors exist related to plugin handling,     'onclick' handling, 'SVG' text references and the PDF     viewer. (CVE-2012-2878, CVE-2012-2887, CVE-2012-2888,     CVE-2012-2890)

  - An error exists related to 'DOM' topology corruption.
    (CVE-2012-2879)

  - Race conditions exist in the plugin paint buffer.
    (CVE-2012-2880)

  - 'DOM' tree corruption can occur with plugins.
    (CVE-2012-2881)

  - A pointer error exists related to 'OGG' container     handling. (CVE-2012-2882)

  - An out-of-bounds read error exists related to Skia.
    (CVE-2012-2884)

  - The possibility of a double-free error exists related to     application exit. (CVE-2012-2885)

  - Universal cross-site scripting issues exist related     to the v8 JavaScript engine bindings and frame     handling. (CVE-2012-2886, CVE-2012-2889)

  - Address information can be leaked via inter process     communication (IPC). (CVE-2012-2891)

  - A bypass error exists related to pop-up block.
    (CVE-2012-2892)

  - A double-free error exists related to 'XSL' transforms.
    (CVE-2012-2893)

  - An error exists related to graphics context handling.
    (CVE-2012-2894)

  - An unspecified memory corruption issue exists in the     Windows 7 kernel, as used by Google Chrome.
    (CVE-2012-2897)

Successful exploitation of any of these issues could lead to an application crash or even allow arbitrary code execution, subject to the user's privileges.

The remote Redhat Enterprise Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:1265 advisory.

  - libxslt: Heap address leak in XLST (CVE-2011-1202)

  - libxslt: Out-of-bounds read when parsing certain patterns (CVE-2011-3970)

  - libxslt: DoS when reading unexpected DTD nodes in XSLT (CVE-2012-2825)

  - libxslt: Use-after-free when processing an invalid XPath expression (CVE-2012-2870)

  - libxslt: Heap-buffer overflow caused by bad cast in XSL transforms (CVE-2012-2871)

  - libxslt: Heap-double-free in xmlFreeNodeList (CVE-2012-2893)

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

Updated libxslt packages that fix several security issues are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team 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.

libxslt is a library for transforming XML files into other textual formats (including HTML, plain text, and other XML representations of the underlying data) using the standard XSLT stylesheet transformation mechanism.

A heap-based buffer overflow flaw was found in the way libxslt applied templates to nodes selected by certain namespaces. An attacker could use this flaw to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application.
(CVE-2012-2871)

Several denial of service flaws were found in libxslt. An attacker could use these flaws to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash. (CVE-2012-2825, CVE-2012-2870, CVE-2011-3970)

An information leak could occur if an application using libxslt processed an untrusted XPath expression, or used a malicious XSL file to perform an XSL transformation. If combined with other flaws, this leak could possibly help an attacker bypass intended memory corruption protections. (CVE-2011-1202)

All libxslt users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. All running applications linked against libxslt must be restarted for this update to take effect.

ID	Name	Product	Family	Severity
80695	Oracle Solaris Third-Party Patch Update : libxslt (multiple_vulnerabilities_in_libxslt)	Nessus	Solaris Local Security Checks	medium
74788	openSUSE Security Update : chromium (openSUSE-SU-2012:1376-1)	Nessus	SuSE Local Security Checks	high
71907	GLSA-201401-07 : libxslt: Denial of Service	Nessus	Gentoo Local Security Checks	medium
68622	Oracle Linux 5 / 6 : libxslt (ELSA-2012-1265)	Nessus	Oracle Linux Local Security Checks	medium
66061	Mandriva Linux Security Advisory : libxslt (MDVSA-2013:047)	Nessus	Mandriva Local Security Checks	medium
62504	Mandriva Linux Security Advisory : libxslt (MDVSA-2012:164)	Nessus	Mandriva Local Security Checks	medium
62440	Debian DSA-2555-1 : libxslt - several vulnerabilities	Nessus	Debian Local Security Checks	medium
62435	Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : libxslt vulnerabilities (USN-1595-1)	Nessus	Ubuntu Local Security Checks	medium
62340	FreeBSD : chromium -- multiple vulnerabilities (5bae2ab4-0820-11e2-be5f-00262d5ed8ee)	Nessus	FreeBSD Local Security Checks	high
800969	Google Chrome < 22.0.1229.79 Multiple Vulnerabilities	Log Correlation Engine	Web Clients	high
62313	Google Chrome < 22.0.1229.79 Multiple Vulnerabilities	Nessus	Windows	critical
62090	RHEL 5 / 6 : libxslt (RHSA-2012:1265)	Nessus	Red Hat Local Security Checks	critical
62085	CentOS 5 / 6 : libxslt (CESA-2012:1265)	Nessus	CentOS Local Security Checks	medium

Detections

Analytics

CVE-2012-2893

critical

Tenable Plugins

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medium