CVE-2009-3527 Race condition in n/a

Medium 6.9 Published 6 Oct 2009 Updated 17 Sep 2024

Local attackers can exploit a race condition in FreeBSD's Pipe IPC close function to cause a crash or gain elevated privileges.

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-2009-3527?

CVE-2009-3527 is a medium-severity vulnerability in Freebsd Freebsd, published on 6 Oct 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Race condition in the Pipe (IPC) close function in FreeBSD 6.3 and 6.4 allows local users to cause a denial of service (crash) or gain privileges via vectors related to kqueues, which triggers a use after free, leading to a NULL pointer dereference or memory corruption.

Weakness: CWE-362

Which versions are affected by CVE-2009-3527?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2009-3527?

No fix has been published for CVE-2009-3527 yet. Limit exposure of the affected software until one is available.

Is CVE-2009-3527 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3527 exists.

Public exploit code: 1 Exploit-DB entry.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-4c32-x28m-p8h3.