A buffer overflow vulnerability in tiff12_print_page() in devices/gdevtfnx.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: https://bugs.ghostscript.com/show_bug.cgi?id=701807 https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=714e8995cd582d418276915cbbec3c70711fb19e
Created ghostscript tracking bugs for this issue: Affects: fedora-all [bug 1870170]
Flaw Summary: If the size variable is not a multiple of 6, a heap buffer overflow -> out-of-bounds read could occur in the tiff12_print_page() routine of /devices/gdevtfnx.c. size is received from a printer device. This flaw could be exploited via a crafted PDF file input. The patch adds 5 to the size prior to heap allocation to avoid this.
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-2020-16300