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Vigil@nce - NetBSD: denial of service via modctl
September 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can use modctl of NetBSD, in order to trigger a
denial of service.
Impacted products: NetBSD
Severity: 1/4
Creation date: 27/08/2014
Revision date: 27/08/2014
DESCRIPTION OF THE VULNERABILITY
The modctl() system call performs an operation on a kernel module.
The MODCTL_LOAD operation loads a module. The kernel allocates the
requested size. However, a size of zero or too large stops the
kernel.
A local attacker can therefore use modctl of NetBSD, in order to
trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/NetBSD-denial-of-service-via-modctl-15237
