SB2012111903 - NULL pointer dereference in libvirt
Published: November 19, 2012 Updated: April 1, 2021
Security Bulletin ID
SB2012111903
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2012-4423)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via an RPC call with (1) an event as the RPC number or (2) an RPC number whose value is in a "gap" in the RPC dispatch table.
Remediation
Install update from vendor's website.
References
- http://libvirt.org/git/?p=libvirt.git;a=commit;h=b7ff9e696063189a715802d081d55a398663c15a
- http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=f8fbeb50d52520a109d71c8566fed2ea600650ec
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/089976.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090121.html
- http://lists.opensuse.org/opensuse-security-announce/2013-02/msg00001.html
- http://rhn.redhat.com/errata/RHSA-2012-1359.html
- http://www.openwall.com/lists/oss-security/2012/09/13/14
- http://www.securityfocus.com/bid/55541
- http://www.securitytracker.com/id?1027649
- http://www.ubuntu.com/usn/USN-1708-1
- https://bugzilla.redhat.com/show_bug.cgi?id=857133
- https://www.redhat.com/archives/libvir-list/2012-September/msg00843.html