Bug 986383 (CVE-2013-4153)

Summary: CVE-2013-4153 libvirt: double free of returned JSON array in qemuAgentGetVCPUs()
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, eblake, herrold, itamar, jforbes, jkurik, jyang, laine, libvirt-maint, veillard, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,public=20130716,reported=20130716,source=redhat,cvss2=6.8/AV:A/AC:H/Au:N/C:C/I:C/A:C,rhel-5/libvirt=notaffected,rhel-6/libvirt=notaffected,fedora-all/libvirt=affected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-07-19 12:03:35 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 984821, 986408    
Bug Blocks: 986392    

Description Petr Matousek 2013-07-19 12:01:37 EDT
A part of the returned monitor response was freed twice and caused crashes of the daemon when using guest agent cpu count retrieval.

A remote user able to issue commands to libvirt daemon could use this flaw to crash libvirtd or, potentially, escalate their privilages to that of libvirtd process.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=984821
https://www.redhat.com/archives/libvir-list/2013-July/msg01035.html

Acknowledgements:

This issue was discovered by Petr Krempa of Red Hat.
Comment 1 Petr Matousek 2013-07-19 12:03:35 EDT
Statement:

Not vulnerable. This issue did not affect the versions of libvirt as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.
Comment 3 Petr Matousek 2013-07-19 13:09:59 EDT
Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 986408]