Synopsis
The remote Debian host is missing a security-related update.
Description
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.
Solution
Upgrade the webkit packages.
For the stable distribution (squeeze), these problems have been fixed in version 1.2.7-0+squeeze1.
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.
Plugin Details
File Name: debian_DSA-2188.nasl
Agent: unix
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:webkit, cpe:/o:debian:debian_linux:6.0
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 3/10/2011
Vulnerability Publication Date: 7/28/2010
Reference Information
CVE: CVE-2010-0474, CVE-2010-1783, CVE-2010-2901, CVE-2010-4040, CVE-2010-4199, CVE-2010-4492, CVE-2010-4493, CVE-2010-4577, CVE-2010-4578, CVE-2011-0482, CVE-2011-0778
BID: 42035, 45722, 45788, 46144