Bug 857133 (CVE-2012-4423) - CVE-2012-4423 libvirt: null function pointer invocation in virNetServerProgramDispatchCall()
Summary: CVE-2012-4423 libvirt: null function pointer invocation in virNetServerProgra...
Alias: CVE-2012-4423
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 842947 857134 857135
Blocks: 857152 861008
TreeView+ depends on / blocked
Reported: 2012-09-13 16:14 UTC by Petr Matousek
Modified: 2023-05-12 18:57 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2013-08-24 13:57:38 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:1359 0 normal SHIPPED_LIVE Moderate: libvirt security and bug fix update 2012-10-11 17:22:32 UTC

Description Petr Matousek 2012-09-13 16:14:43 UTC
It has been found that sending RPC message with an event as the RPC number, or RPC number that falls into gap in the RPC dispatch table, can lead to libvirtd accessing memory at page zero. A remote attacker could use this flaw to crash libvirtd (DoS).

Proposed upstream fix:

Comment 1 Petr Matousek 2012-09-13 16:15:39 UTC

The versions of libvirt as shipped with Red Hat Enterprise Linux 5 are not affected.

This issue did affect the versions of the libvirt package as shipped with Red Hat Enterprise Linux 6.

Comment 3 Petr Matousek 2012-09-13 16:17:55 UTC
Created libvirt tracking bugs for this issue

Affects: fedora-all [bug 857135]

Comment 4 Murray McAllister 2012-09-18 03:45:54 UTC

This issue was discovered by Wenlong Huang of the Red Hat Virtualization QE Team.

Comment 5 errata-xmlrpc 2012-10-11 13:24:23 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:1359 https://rhn.redhat.com/errata/RHSA-2012-1359.html

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