CVE-2013-4371 Use after free in n/a

Medium 4.4 Published 17 Oct 2013 Updated 6 Aug 2024

Local attackers can trigger a use-after-free in Xen's libxl library under memory pressure, causing crashes or potentially executing arbitrary code.

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-2013-4371?

CVE-2013-4371 is a medium-severity use after free vulnerability in Xen Xen, published on 17 Oct 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use-after-free vulnerability in the libxl_list_cpupool function in the libxl toolstack library in Xen 4.2.x and 4.3.x, when running "under memory pressure," returns the original pointer when the realloc function fails, which allows local users to cause a denial of service (heap corruption and crash) and possibly execute arbitrary code via unspecified vectors.

Weakness: CWE-399

Which versions are affected by CVE-2013-4371?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2013-4371?

Apply the vendor's patch.

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-2013-4371 being exploited?

There is no known exploitation of CVE-2013-4371 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as DEBIAN-CVE-2013-4371, GHSA-3hjr-2qmj-c4wj.