Input validation error in Ghostscript - CVE-2020-16305

Vulnerability identifier: #VU45847

CSH Severity: Medium

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-16305

CWE-ID: CWE-20

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in devices/gdevpcx.c. A remote attacker can cause a denial of service via a crafted PDF file.

Ghostscript
Gentoo Linux
Amazon Linux AMI
Anolis OS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Ubuntu
ghostscript (Debian package)
ghostscript (Alpine package)
ghostscript
libgs9 (Ubuntu package)
ghostscript (Ubuntu package)
ghostscript (Red Hat package)
libgs-devel
ghostscript-doc
libgs
ghostscript-x11
ghostscript-tools-printing
ghostscript-tools-fonts
ghostscript-tools-dvipdf

Install update from vendor's website.

Ghostscript - update to 9.51
ghostscript (Debian package) - update to 9.27~dfsg-2+deb10u4
ghostscript (Alpine package) - update to 9.53.1-r0
ghostscript - update to 8.70-24.31
libgs9 (Ubuntu package) - addressed in versions 9.26~dfsg+0-0ubuntu0.16.04.13, 9.26~dfsg+0-0ubuntu0.18.04.13, 9.50~dfsg-5ubuntu4.2
ghostscript (Ubuntu package) - addressed in versions 9.26~dfsg+0-0ubuntu0.16.04.13, 9.26~dfsg+0-0ubuntu0.18.04.13, 9.50~dfsg-5ubuntu4.2
ghostscript (Red Hat package) - update to 9.27-1.el8
libgs-devel - update to 9.54.0-11
ghostscript-doc - update to 9.54.0-11
libgs - update to 9.54.0-11
ghostscript-x11 - update to 9.54.0-11
ghostscript-tools-printing - update to 9.54.0-11
ghostscript-tools-fonts - update to 9.54.0-11
ghostscript-tools-dvipdf - update to 9.54.0-11
ghostscript - update to 9.54.0-11

• https://bugs.ghostscript.com/show_bug.cgi?id=701819
• https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=2793769ff107d8d22dadd30c6e68cd781b569550
• https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html

• Multiple vulnerabilities in Ghostscript
• Debian update for ghostscript
• Gentoo update for GPL Ghostscript
• Input validation error in ghostscript (Alpine package)
• Red Hat Enterprise Linux 8 update for ghostscript
• Amazon Linux AMI update for ghostscript
• Anolis OS update for ghostscript
• Ubuntu update for ghostscript