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.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ghostscript | Artifex | * | 9.52 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | ghostscript-0:9.27-1.el8 | * |
| Ghostscript | Ubuntu | bionic | * |
| Ghostscript | Ubuntu | esm-infra/bionic | * |
| Ghostscript | Ubuntu | esm-infra/focal | * |
| Ghostscript | Ubuntu | esm-infra/xenial | * |
| Ghostscript | Ubuntu | focal | * |
| Ghostscript | Ubuntu | trusty | * |
| Ghostscript | Ubuntu | upstream | * |
| Ghostscript | Ubuntu | xenial | * |
Potential Mitigations
References
- http://git.ghostscript.com/?p=ghostpdl.git%3Bh=2c2dc335c212750e0fb8ae157063bc06cafa8d3e
- https://bugs.ghostscript.com/show_bug.cgi?id=701796
- https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html
- https://security.gentoo.org/glsa/202008-20
- https://usn.ubuntu.com/4469-1/
- https://www.debian.org/security/2020/dsa-4748
- http://git.ghostscript.com/?p=ghostpdl.git%3Bh=2c2dc335c212750e0fb8ae157063bc06cafa8d3e
- https://bugs.ghostscript.com/show_bug.cgi?id=701796
- https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html
- https://security.gentoo.org/glsa/202008-20
- https://usn.ubuntu.com/4469-1/
- https://www.debian.org/security/2020/dsa-4748