Vigil@nce - GraphicsMagick: use after free via ReadOneJNGImage
December 2018 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian.
Severity: 2/4.
Consequences: user access/rights, denial of service on service,
denial of service on client.
Provenance: document.
Confidence: confirmed by the editor (5/5).
Creation date: 17/10/2018.
DESCRIPTION OF THE VULNERABILITY
An attacker can force the usage of a freed memory area via
ReadOneJNGImage() of GraphicsMagick, in order to trigger a denial
of service, and possibly to run code.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/GraphicsMagick-use-after-free-via-ReadOneJNGImage-27542