A null pointer dereference vulnerability in clj_media_size() in devices/gdevclj.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted PDF file. This is fixed in v9.51. Reference: http://git.ghostscript.com/?p=ghostpdl.git;h=2c2dc335c212750e0fb8ae157063bc06cafa8d3e https://bugs.ghostscript.com/show_bug.cgi?id=701796
Created ghostscript tracking bugs for this issue: Affects: fedora-all [bug 1870180]
Flaw summary: This flaw is caused by an incorrect test for existence of parameter HWResolution in /devices/gdevclj.c's clj_media_size() routine. If HWResolution does not exist, the if statement test can pass and lead to a null pointer dereference or divide by zero error, crashing the process.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1852 https://access.redhat.com/errata/RHSA-2021:1852
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-16295