Bug 891942 (CVE-2012-6094)

Summary: CVE-2012-6094 cups: 'Listen localhost:631' option not honoured correctly on IPv6-enabled systems when systemd used for CUPS socket activation
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jpopelka, jrusnack, twaugh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20121221,reported=20130104,source=internet,cvss2=6.8/AV:N/AC:M/Au:N/C:P/I:P/A:P,rhel-5/cups=notaffected,rhel-6/cups=notaffected,fedora-all/cups=affected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 842365, 891945    
Bug Blocks:    

Description Jan Lieskovsky 2013-01-04 10:21:33 EST
During the process of CUPS socket activation code refactoring in favour of systemd capability a security flaw was found in the way CUPS service honoured Listen localhost:631 cupsd.conf configuration option. The setting was recognized properly for IPv4-enabled systems, but failed to be correctly applied for IPv6-enabled systems. As a result, a remote attacker could use this flaw to obtain (unauthorized) access to the CUPS web-based administration interface.

[1] https://bugzilla.novell.com/show_bug.cgi?id=795624
Comment 1 Jan Lieskovsky 2013-01-04 10:23:53 EST
This issue did NOT affect the versions of the cups package, as shipped with Red Hat Enterprise Linux 5 and 6 as they did not use systemd capability for CUPS socket activation yet.


This issue affects the versions of the cups package, as shipped with Fedora release of 16 and 17. Please schedule an update.
Comment 2 Jan Lieskovsky 2013-01-04 10:24:33 EST
Created cups tracking bugs for this issue

Affects: fedora-all [bug 891945]
Comment 3 Jan Lieskovsky 2013-01-04 10:31:42 EST
CVE Request:
Comment 4 Jan Lieskovsky 2013-01-04 10:36:24 EST

Not vulnerable. This issue did not affect the versions of cups as shipped with Red Hat Enterprise Linux 5 and 6 as they did not use the systemd capability for CUPS socket activation yet.
Comment 5 Vincent Danen 2013-01-07 11:10:19 EST
This was assigned CVE-2012-6094:

Comment 8 Fedora Update System 2013-02-25 21:41:53 EST
cups-1.5.4-18.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.