Actu
Vigil@nce - nginx: use after free via HTTPv2
December 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can force the usage of a freed memory area in the
HTTPv2 implementation of nginx, in order to trigger a denial of
service, and possibly to run code.
Impacted products: nginx.
Severity: 2/4.
Creation date: 29/10/2015.
DESCRIPTION OF THE VULNERABILITY
The nginx product supports the HTTP version 2 protocol since nginx
version 1.9.5.
However, when a PRI packet is received, the ngx_destroy_pool()
function frees a memory area before reusing it.
An attacker can therefore force the usage of a freed memory area
in the HTTPv2 implementation of nginx, in order to trigger a
denial of service, and possibly to run code.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/nginx-use-after-free-via-HTTPv2-18213
