CVE-2006-4435 Denial of service in n/a

Medium 4.9 Published 29 Aug 2006 Updated 7 Aug 2024

A local attacker can cause a kernel panic and denial of service in OpenBSD by allocating more semaphores than the default limit.

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-2006-4435?

CVE-2006-4435 is a medium-severity denial of service vulnerability in Openbsd Openbsd, published on 29 Aug 2006. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

OpenBSD 3.8, 3.9, and possibly earlier versions allows context-dependent attackers to cause a denial of service (kernel panic) by allocating more semaphores than the default.

Which versions are affected by CVE-2006-4435?

It affects 1 product.

Products include Openbsd Openbsd.

How do I fix CVE-2006-4435?

No fix has been published for CVE-2006-4435 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2006-4435 being exploited?

There is no known exploitation of CVE-2006-4435 in the wild and no public exploit code.

All Openbsd Openbsd vulnerabilities

Sources

Also known as GHSA-5rvr-prhw-cr2q.