Bug 996241 (CVE-2013-4239)

Summary: CVE-2013-4239 libvirt: memory corruption in xenDaemonListDefinedDomains function
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: acathrow, berrange, bsarathy, clalancette, itamar, jforbes, jkurik, jyang, laine, libvirt-maint, veillard, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-08-12 18:22:01 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 996243, 996244    
Bug Blocks: 996246    

Description Petr Matousek 2013-08-12 18:16:04 UTC 
Commit 632180d1 introduced memory corruption in xenDaemonListDefinedDomains() by starting to populate the names array at index -1, causing all sorts of havoc in libvirtd such as aborts like the following

*** Error in `/usr/sbin/libvirtd': double free or corruption (out): 0x00007fffe00ccf20 ***

The xenDaemonListDefinedDomains() function is reached by the virConnectListDefinedDomains() public API, which can be used on read-only connections.

Introduced in:
libvirt v1.1.1

Introduced by:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=632180d1

Fixed by:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=0e671a16
Comment 2 Petr Matousek 2013-08-12 18:21:33 UTC 
Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 996244]
Comment 3 Petr Matousek 2013-08-12 18:22:01 UTC 
Statement:

Not vulnerable.

This issue did not affect the versions of libvirt package as shipped with Red Hat Enterprise Linux 5 and 6.
Comment 4 Vincent Danen 2013-08-13 00:18:10 UTC 
This was assigned CVE-2013-4239:

http://seclists.org/oss-sec/2013/q3/360