CVE-2013-1920 Use after free in n/a
Local guest kernels can exploit a use-after-free in Xen to inject events and gain privileges when XSM is enabled under memory pressure.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2013-1920?
CVE-2013-1920 is a medium-severity use after free vulnerability in Xen Xen, published on 12 Apr 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.
Weakness: CWE-264
Which versions are affected by CVE-2013-1920?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2013-1920?
No fix has been published for CVE-2013-1920 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2013-1920 being exploited?
There is no known exploitation of CVE-2013-1920 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as GHSA-xgcf-925j-mrg9.