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                                    CERT-Renater

                         Note d'Information No. 2011/VULN215
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DATE                      : 11/03/2011

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Debian running webkit.

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http://www.debian.org/security/2011/dsa-2188
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2188-1                   security@debian.org
http://www.debian.org/security/                         Giuseppe Iuculano
March 10, 2011                         http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : webkit
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2010-1783 CVE-2010-2901 CVE-2010-4199 CVE-2010-4040 CVE-2010-4492 CVE-2010-4493 
CVE-2010-4577 CVE-2010-4578 CVE-2010-0474 CVE-2011-0482 CVE-2011-0778

Several vulnerabilities have been discovered in webkit, a Web content engine
library for Gtk+. The Common Vulnerabilities and Exposures project identifies
the following problems:

CVE-2010-1783

   WebKit does not properly handle dynamic modification of a
   text node, which allows remote attackers to execute arbitrary code or cause
   a denial of service (memory corruption and application crash) via a
   crafted HTML document.


CVE-2010-2901

   The rendering implementation in WebKit allows
   remote attackers to cause a denial of service (memory corruption) or possibly
   have unspecified other impact via unknown vectors.


CVE-2010-4199

   WebKit does not properly perform a cast of an
   unspecified variable during processing of an SVG use element, which allows
   remote attackers to cause a denial of service or possibly have unspecified
   other impact via a crafted SVG document.


CVE-2010-4040

   WebKit does not properly handle animated GIF images,
   which allows remote attackers to cause a denial of service (memory corruption)
   or possibly have unspecified other impact via a crafted image.


CVE-2010-4492

   Use-after-free vulnerability in WebKit allows
   remote attackers to cause a denial of service or possibly have
   unspecified other impact via vectors involving SVG animations.


CVE-2010-4493

   Use-after-free vulnerability in Webkit allows remote attackers to cause a
   denial of service via vectors related to the handling of mouse dragging events


CVE-2010-4577

   The CSSParser::parseFontFaceSrc function in WebCore/css/CSSParser.cpp in
   WebKit does not properly parse Cascading Style Sheets (CSS) token sequences,
   which allows remote attackers to cause a denial of service
   (out-of-bounds read) via a crafted local font, related to "Type Confusion."


CVE-2010-4578

   WebKit does not properly perform cursor handling, which allows remote
   attackers to cause a denial of service or possibly have unspecified other
   impact via unknown vectors that lead to "stale pointers."


CVE-2011-0482

   WebKit does not properly perform a cast of an unspecified variable during
   handling of anchors, which allows remote attackers to cause a denial of
   service or possibly have unspecified other impact via a crafted HTML document


CVE-2011-0778

   WebKit does not properly restrict drag and drop operations, which might allow
   remote attackers to bypass the Same Origin Policy via unspecified vectors.



For the stable distribution (squeeze), these problems have been fixed
in version 1.2.7-0+squeeze1

For the testing distribution (wheezy), and the unstable distribution (sid),
these problems have been fixed in version 1.2.7-1


Security support for WebKit has been discontinued for the oldstable
distribution (lenny).
The current version in oldstable is not supported by upstream anymore
and is affected by several security issues. Backporting fixes for these
and any future issues has become unfeasible and therefore we need to
drop our security support for the version in oldstable.

We recommend that you upgrade your webkit packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

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