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Category:   Application (Generic)  >   libvirt Vendors:
libvirt Flaw in virNetServerProgramDispatchCall() Lets Remote Users Deny Service
SecurityTracker Alert ID:  1027649
SecurityTracker URL:
CVE Reference:   CVE-2012-4423   (Links to External Site)
Date:  Oct 12 2012
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in libvirt. A remote user can cause denial of service conditions.

A remote user with the ability to establish a read-only connection to libvirtd can send a specially crafted RPC message to trigger a flaw in virNetServerProgramDispatchCall() and cause the target libvirtd service to crash.

Wenlong Huang of the Red Hat Virtualization QE Team reported this vulnerability.

Impact:   A remote user can cause the target service to crash.
Solution:   The vendor has issued a source code fix, available at:;a=commit;h=b7ff9e696063189a715802d081d55a398663c15a

Vendor URL: (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.
Oct 12 2012 (Red Hat Issues Fix) libvirt Flaw in virNetServerProgramDispatchCall() Lets Remote Users Deny Service
Red Hat has issued a fix for Red Hat Enterprise Linux 6.

 Source Message Contents

[Original Message Not Available for Viewing]

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