PT-2020-5544 · Artifex+7 · Ghostscript+7

Suhwan · Published 2020-08-13 · Updated 2022-08-24 · CVE-2020-16293

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions GhostScript versions prior to 9.51

Description A null pointer dereference issue in the compose group nonknockout nonblend isolated allmask common() function in base/gxblend.c allows a remote attacker to cause a denial of service via a crafted PDF file.

Recommendations For GhostScript versions prior to 9.51, update to version 9.51 to resolve the issue. As a temporary workaround, consider restricting the processing of crafted PDF files until the update is applied.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2021:1852

ALT-PU-2020-3124

BDU:2021-01143

CESA-2021_1852

CVE-2020-16293

DLA-2335-1

DSA-4748-1

MGASA-2020-0344

RHSA-2021:1852

RHSA-2021_1852

RLSA-2021:1852

USN-4469-1

Affected Products

Alt Linux

Almalinux

Centos

Ghostscript

Linuxmint

Red Hat

Rocky Linux

Ubuntu

References · 115

• 🔥 https://bugs.ghostscript.com/show_bug.cgi?id=701795 · Exploit
• https://ubuntu.com/security/CVE-2020-16288 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-16295 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4469-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-16298 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:1852 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-1852.html · Vendor Advisory
• https://debian.org/lts/security/2020/dla-2335 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-16297 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0344 · Vendor Advisory
• https://usn.ubuntu.com/4469-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2335-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4469-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-17538 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2020-16293 · Vendor Advisory