Mike Hommey uploaded new packages for iceweasel which fixed the following security problems:
Roberto Suggi Liverani discovered that the sanitising performed by ParanoidFragmentSink was incomplete.
Crashes in the layout engine may lead to the execution of arbitrary code.
Zach Hoffmann discovered that incorrect parsing of recursive eval() calls could lead to attackers forcing acceptance of a confirmation dialogue.
"regenrecht" and Igor Bukanov discovered a use-after-free error in the JSON-Implementation, which could lead to the execution of arbitrary code.
Daniel Kozlowski discovered that incorrect memory handling the web workers implementation could lead to the execution of arbitrary code.
Peleus Uhley discovered a cross-site request forgery risk in the plugin code.
For the lenny-backports distribution the problems have been fixed in version 3.5.16-5~bpo50+1.
For the oldstable distribution (lenny), this problem has been fixed in version 220.127.116.11-8 of the xulrunner source package.
For the stable distribution (squeeze), this problem has been fixed in version 3.5.16-5.
For the unstable distribution (sid), this problem has been fixed in version 3.5.17-1.
If you don't use pinning (see ) you have to update the package manually via "apt-get -t lenny-backports install <packagelist>" with the packagelist of your installed packages affected by this update.  <http://backports.debian.org/Instructions>
We recommend to pin (in /etc/apt/preferences) the backports repository to 200 so that new versions of installed backports will be installed automatically.
Package: * Pin: release a=lenny-backports Pin-Priority: 200