icedove - several

Several vulnerabilities have been discovered in Icedove, a mail client
based on Thunderbird.

• CVE-2011-3647
  The JSSubScriptLoader does not properly handle
  XPCNativeWrappers during calls to the loadSubScript method in
  an add-on, which makes it easier for remote attackers to gain
  privileges via a crafted web site that leverages certain
  unwrapping behavior.
• CVE-2011-3648
  A cross-site scripting (XSS) vulnerability allows remote
  attackers to inject arbitrary web script or HTML via crafted
  text with Shift JIS encoding.
• CVE-2011-3650
  Iceweasel does not properly handle JavaScript files that
  contain many functions, which allows user-assisted remote
  attackers to cause a denial of service (memory corruption and
  application crash) or possibly have unspecified other impact
  via a crafted file that is accessed by debugging APIs, as
  demonstrated by Firebug.

For the stable distribution (squeeze), these problems have been fixed
in version 3.0.11-1+squeeze6.

For the testing distribution (wheezy) and the unstable distribution
(sid), these problems have been fixed in version 3.1.15-1.

We recommend that you upgrade your icedove packages.