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Category:   Application (Security)  >   PolicyKit Vendors:   Freedesktop.org
PolicyKit Bugs Let Local Users Deny Service or Gain Elevated Privileges
SecurityTracker Alert ID:  1035023
SecurityTracker URL:  http://securitytracker.com/id/1035023
CVE Reference:   CVE-2015-3218, CVE-2015-3255, CVE-2015-3256, CVE-2015-4625   (Links to External Site)
Date:  Feb 17 2016
Impact:   Denial of service via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 0.113
Description:   Several vulnerabilities were reported in PolicyKit. A local user can cause denial of service conditions on the target application. A local user can obtain elevated privileges on the target system.

A local user can exploit predictable session authentication cookies to gain elevated privileges [CVE-2015-4625].

Tavis Ormandy of Google Project Zero reported this vulnerability.

A local user can trigger memory corruption errors in the JavaScript interpreter to gain elevated privileges [CVE-2015-3256].

A local user can trigger memory corruption errors in the processing of duplicate action IDs to gain elevated privileges [CVE-2015-3255].

Laurent Bigonville reported this vulnerability.

A local user can cause polkitd to crash [CVE-2015-3218].

Tavis Ormandy of Google Project Zero reported this vulnerability.

Impact:   A local user can cause denial of service conditions on the target application.

A local user can obtain elevated privileges on the target system.

Solution:   The vendor has issued a fix (0.113) [in July 2015].

The vendor's advisory is available at:

https://lists.freedesktop.org/archives/polkit-devel/2015-July/000432.html

Vendor URL:  www.freedesktop.org/wiki/Software/polkit/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 17 2016 (Red Hat Issues Fix) PolicyKit Bugs Let Local Users Deny Service or Gain Elevated Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Feb 17 2016 (CentOS Issues Fix) PolicyKit Bugs Let Local Users Deny Service or Gain Elevated Privileges
CentOS has issued a fix for CentOS 7.
Feb 18 2016 (Oracle Issues Fix for Oracle Linux) PolicyKit Bugs Let Local Users Deny Service or Gain Elevated Privileges
Oracle has issued a fix for Oracle Linux 7.



 Source Message Contents



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