A buffer overflow vulnerability in contrib/gdevdj9.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. References: http://git.ghostscript.com/?p=ghostpdl.git;h=4f73e8b4d578e69a17f452fa60d2130c5faaefd6 https://bugs.ghostscript.com/show_bug.cgi?id=701787
Created ghostscript tracking bugs for this issue: Affects: fedora-all [bug 1870241]
Flaw summary: Several issues in /contrib/gdevdj9.c contribute to this flaw which is triggered in mem_true32_fill_rectangle() of /contrib/gdevdj9.c. cdj970_print_page is earlier in the backtrace and is a source of the vulnerability, along with its associated functions as seen in the upstream patch. The sink here is the `dest` pointer when it is passed to memset. It is caused by mishandling of resolutions and can be triggered if an attacker provides a crafted PDF file.
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-2020-16291