Artifex Ghostscript 9.50 Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability


Artifex Ghostscript 9.50 suffers from improper restriction of operations within the bounds of a memory buffer vulnerability


The information has been provided by Ray Johnston

The original article can be found at:;a=log


A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The ‘rsearch’ calculation for the ‘post’ size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.


Vulnerable Systems:

Artifex Ghostscript 9.50 

Artifex Ghostscript 9.52


CVE Information:



Disclosure Timeline:
Published Date:7/28/2020

Categories: News