iceweasel - several

Several vulnerabilities have been found in Iceweasel, a web browser
based on Firefox:

• CVE-2011-2372
  Mariusz Mlynski discovered that websites could open a download
  dialog — which has open as the default action —, while a user
  presses the ENTER key.
• CVE-2011-2995
  Benjamin Smedberg, Bob Clary and Jesse Ruderman discovered crashes
  in the rendering engine, which could lead to the execution of
  arbitrary code.
• CVE-2011-2998
  Mark Kaplan discovered an integer underflow in the JavaScript
  engine, which could lead to the execution of arbitrary code.
• CVE-2011-2999
  Boris Zbarsky discovered that incorrect handling of the
  window.location object could lead to bypasses of the same-origin
  policy.
• CVE-2011-3000
  Ian Graham discovered that multiple Location headers might lead to
  CRLF injection.

For the oldstable distribution (lenny), this problem has been fixed in
version 1.9.0.19-14 of the xulrunner source package. This update also
marks the compromised DigiNotar root certs as revoked rather then
untrusted.

For the stable distribution (squeeze), this problem has been fixed
in version 3.5.16-10. This update also marks the compromised DigiNotar
root certs as revoked rather then untrusted.

For the unstable distribution (sid), this problem has been fixed in
version 7.0-1.

We recommend that you upgrade your iceweasel packages.