Vigil@nce - libass: three vulnerabilities
December 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can use several vulnerabilities of libass.
– Impacted products: Debian, Fedora, openSUSE, openSUSE Leap.
– Severity: 2/4.
– Creation date: 20/10/2016.
DESCRIPTION OF THE VULNERABILITY
Several vulnerabilities were announced in libass.
An attacker can force a read at an invalid address via Mode 0/3
Line Wrapping, in order to trigger a denial of service, or to
obtain sensitive information. [severity:1/4; CVE-2016-7969]
An attacker can force a read at an invalid address via Gaussian
Blur Coefficient, in order to trigger a denial of service, or to
obtain sensitive information. [severity:2/4; CVE-2016-7970]
An attacker can generate a memory corruption, in order to trigger
a denial of service, and possibly to run code. [severity:2/4;
CVE-2016-7972]
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/libass-three-vulnerabilities-20920