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Category:   Application (Generic)  >   libvirt Vendors:   libvirt.org
libvirt API Access Control Flaw Lets Remote Users Deny Service and Potentially Gain Elevated Privileges
SecurityTracker Alert ID:  1025262
SecurityTracker URL:  http://securitytracker.com/id/1025262
CVE Reference:   CVE-2011-1146   (Links to External Site)
Date:  Mar 28 2011
Impact:   Denial of service via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 0.8.8
Description:   A vulnerability was reported in libvirt. A remote user can cause denial of service conditions. A remote user may be able to obtain elevated privileges on the target system.

A remote user can invoke certain API calls that do not properly enforce read-only access controls to cause the target libvirtd server to crash or potentially grant elevated privileges.

The affected API calls are:

- virConnectDomainXMLToNative
- virNodeDeviceDettach
- virNodeDeviceReAttach
- virNodeDeviceReset
- virDomainRevertToSnapshot
- virDomainSnapshotDelete

Impact:   A remote user can cause denial of service conditions on the target system.

A remote user may be able to obtain elevated privileges on the target system.

Solution:   The vendor has issued a source code fix, available at:

http://libvirt.org/git/?p=libvirt.git;a=commit;h=71753cb7f7a16ff800381c0b5ee4e99eea92fed3

Vendor URL:  libvirt.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 28 2011 (Red Hat Issues Fix) libvirt API Access Control Flaw Lets Remote Users Deny Service and Potentially Gain Elevated Privileges   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 5 and 6.



 Source Message Contents

Date:  Mon, 28 Mar 2011 21:39:16 +0000
Subject:  libvirt


"It has been found that several libvirt API calls (virNodeDeviceDettach,
virNodeDeviceReset, virDomainRevertToSnapshot, virDomainSnapshotDelete) did not
honour read-only connection. Remote attacker could use this flaw to crash the
host server (DoS)."

Reference: 
https://bugzilla.redhat.com/show_bug.cgi?id=683650

CVE-2011-1146
 
 


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