SUSE-SU-2015:1838-1: moderate: Security update for polkit

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for polkit
______________________________________________________________________________

Announcement ID:    SUSE-SU-2015:1838-1
Rating:             moderate
References:         #912889 #933922 #935119 #939246 #943816 #950114 
                    
Cross-References:   CVE-2015-3218 CVE-2015-3255 CVE-2015-3256
                    CVE-2015-4625
Affected Products:
                    SUSE Linux Enterprise Workstation Extension 12
                    SUSE Linux Enterprise Software Development Kit 12
                    SUSE Linux Enterprise Server 12
                    SUSE Linux Enterprise Desktop 12
______________________________________________________________________________

   An update that solves four vulnerabilities and has two
   fixes is now available.

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)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Workstation Extension 12:

      zypper in -t patch SUSE-SLE-WE-12-2015-759=1

   - SUSE Linux Enterprise Software Development Kit 12:

      zypper in -t patch SUSE-SLE-SDK-12-2015-759=1

   - SUSE Linux Enterprise Server 12:

      zypper in -t patch SUSE-SLE-SERVER-12-2015-759=1

   - SUSE Linux Enterprise Desktop 12:

      zypper in -t patch SUSE-SLE-DESKTOP-12-2015-759=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Workstation Extension 12 (x86_64):

      libpolkit0-32bit-0.113-4.1
      libpolkit0-debuginfo-32bit-0.113-4.1

   - SUSE Linux Enterprise Software Development Kit 12 (ppc64le s390x x86_64):

      polkit-debuginfo-0.113-4.1
      polkit-debugsource-0.113-4.1
      polkit-devel-0.113-4.1
      polkit-devel-debuginfo-0.113-4.1

   - SUSE Linux Enterprise Server 12 (ppc64le s390x x86_64):

      libpolkit0-0.113-4.1
      libpolkit0-debuginfo-0.113-4.1
      polkit-0.113-4.1
      polkit-debuginfo-0.113-4.1
      polkit-debugsource-0.113-4.1
      typelib-1_0-Polkit-1_0-0.113-4.1

   - SUSE Linux Enterprise Desktop 12 (x86_64):

      libpolkit0-0.113-4.1
      libpolkit0-32bit-0.113-4.1
      libpolkit0-debuginfo-0.113-4.1
      libpolkit0-debuginfo-32bit-0.113-4.1
      polkit-0.113-4.1
      polkit-debuginfo-0.113-4.1
      polkit-debugsource-0.113-4.1
      typelib-1_0-Polkit-1_0-0.113-4.1


References:

   https://www.suse.com/security/cve/CVE-2015-3218.html
   https://www.suse.com/security/cve/CVE-2015-3255.html
   https://www.suse.com/security/cve/CVE-2015-3256.html
   https://www.suse.com/security/cve/CVE-2015-4625.html
   https://bugzilla.suse.com/912889
   https://bugzilla.suse.com/933922
   https://bugzilla.suse.com/935119
   https://bugzilla.suse.com/939246
   https://bugzilla.suse.com/943816
   https://bugzilla.suse.com/950114