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TITLE:
PolicyKit "pkexec" File Existence Disclosure Weakness

SECUNIA ADVISORY ID:
SA39149

VERIFY ADVISORY:
http://secunia.com/advisories/39149/

DESCRIPTION:
A weakness has been reported in PolicyKit, which can be exploited by
malicious, local users to disclose certain system information.

The weakness is caused due to the "pkexec" utility returning
different results depending on the existence of files, which can be
exploited to e.g. determine if a file exists in a restricted
directory.

The weakness is reported in version 0.96. Other versions may also be
affected.

SOLUTION:
Fixed in the GIT repository.
http://cgit.freedesktop.org/PolicyKit/commit/?id=14bdfd816512a82b1ad258fa143ae5faa945df8a

PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg

ORIGINAL ADVISORY:
Launchpad Ubuntu Bug #532852:
https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/532852

PolicyKit:
http://bugs.freedesktop.org/show_bug.cgi?id=26982
http://cgit.freedesktop.org/PolicyKit/commit/?id=14bdfd816512a82b1ad258fa143ae5faa945df8a

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