CVE-2013-6436 Null dereference in n/a
Local users can crash the libvirtd daemon by querying memory parameters of a shutting down LXC guest, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-6436?
CVE-2013-6436 is a low-severity vulnerability in Redhat Libvirt, published on 7 Jan 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The lxcDomainGetMemoryParameters method in lxc/lxc_driver.c in libvirt 1.0.5 through 1.2.0 does not properly check the status of LXC guests when reading memory tunables, which allows local users to cause a denial of service (NULL pointer dereference and libvirtd crash) via a guest in the shutdown status, as demonstrated by the "virsh memtune" command.
Weakness: CWE-264
Which versions are affected by CVE-2013-6436?
It affects 1 product.
Products include Redhat Libvirt.
How do I fix CVE-2013-6436?
Upgrade to a fixed version.
Is CVE-2013-6436 being exploited?
There is no known exploitation of CVE-2013-6436 in the wild and no public exploit code.
Other vulnerabilities in Redhat Libvirt
Sources
Also known as DEBIAN-CVE-2013-6436, GHSA-3r95-9fm6-xqcf.