News
Vigil@nce - NetBSD: denial of service via posix_spawn
March 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can use posix_spawn(), in order to trigger a
denial of service on the NetBSD kernel.
Impacted products: NetBSD
Severity: 1/4
Creation date: 06/03/2014
DESCRIPTION OF THE VULNERABILITY
The posix_spawn() function is used to perform actions on file
descriptors, before creating a new process.
However, it does not limit the number of actions. A attacker can
thus request numerous actions, in order to force the kernel to
allocate a large memory area, leading to a panic.
A local attacker can therefore use posix_spawn(), in order to
trigger a denial of service on the NetBSD kernel.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/NetBSD-denial-of-service-via-posix-spawn-14367
