openSUSE Security Update : polkit (openSUSE-2015-711)

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

The remote openSUSE host is missing a security update.

Description :

polkit was updated to the 0.113 release, fixing security issues and
bugs.

Security issues fixed :

- Fixes CVE-2015-4625, a local privilege escalation due to
predictable authentication session cookie values. Thanks
to Tavis Ormandy, Google Project Zero for reporting this
issue. For the future, authentication agents are
encouraged to use PolkitAgentSession instead of using
the D-Bus agent response API directly. (bsc#935119)

- Fixes CVE-2015-3256, various memory corruption
vulnerabilities in use of the JavaScript interpreter,
possibly leading to local privilege escalation.
(bsc#943816)

- Fixes CVE-2015-3255, a memory corruption vulnerability
in handling duplicate action IDs, possibly leading to
local privilege escalation. Thanks to Laurent Bigonville
for reporting this issue. (bsc#939246)

- Fixes CVE-2015-3218, which allowed any local user to
crash polkitd. Thanks to Tavis Ormandy, Google Project
Zero, for reporting this issue. (bsc#933922)

Other issues fixed :

- On systemd-213 and later, the 'active' state is shared
across all sessions of an user, instead of being tracked
separately.

- pkexec, when not given a program to execute, runs the
users shell by default.

- Fixed shutdown problems on powerpc64le (bsc#950114)

- polkit had a memory leak (bsc#912889)

See also :

https://bugzilla.opensuse.org/show_bug.cgi?id=912889
https://bugzilla.opensuse.org/show_bug.cgi?id=933922
https://bugzilla.opensuse.org/show_bug.cgi?id=935119
https://bugzilla.opensuse.org/show_bug.cgi?id=939246
https://bugzilla.opensuse.org/show_bug.cgi?id=943816
https://bugzilla.opensuse.org/show_bug.cgi?id=950114

Solution :

Update the affected polkit packages.

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)

Family: SuSE Local Security Checks

Nessus Plugin ID: 86957 ()

Bugtraq ID:

CVE ID: CVE-2015-3218
CVE-2015-3255
CVE-2015-3256
CVE-2015-4625

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