NULL pointer dereference in libvirt - CVE-2013-6436
Published: January 7, 2014 / Updated: April 1, 2021
Vulnerability identifier: #VU42175
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2013-6436
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: libvirt.org
Affected software:
libvirt
libvirt
Detailed vulnerability description
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 a guest in the shutdown status, as demonstrated by the "virsh memtune" command.
How to mitigate CVE-2013-6436
Install update from vendor's website.
Sources
- http://libvirt.org/git/?p=libvirt.git;a=commit;h=f8c1cb90213508c4f32549023b0572ed774e48aa
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00004.html
- http://osvdb.org/101485
- http://secunia.com/advisories/56245
- http://secunia.com/advisories/60895
- http://security.gentoo.org/glsa/glsa-201412-04.xml
- http://www.ubuntu.com/usn/USN-2093-1
- https://www.redhat.com/archives/libvir-list/2013-December/msg01170.html