CVE-2020-36773 — Use After Free in Ghostscript

CWE-416 — Use After FreeCWE-787 — Out-of-bounds Write6 documents6 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 71.32%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Artifex Ghostscript
Timeline
PublishedFeb 4

Description

Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶Debianartifex/ghostscript< 9.53.0~dfsg-1+3
▶NVDartifex/ghostscript4 versions+3

Patches

Patch: bugs.ghostscript.com ↗Patch: bugs.ghostscript.com ↗

🔴Vulnerability Details

3
CVEList
CVE-2020-36773: Artifex Ghostscript before 9↗2024-02-04
▶
OSV
CVE-2020-36773: Artifex Ghostscript before 9↗2024-02-04
▶
GHSA
GHSA-mwx2-8cmg-6vmj: Artifex Ghostscript before 9↗2024-02-04
▶

📋Vendor Advisories

2
Red Hat
Ghostscript: out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite)↗2024-02-04
▶
Debian
CVE-2020-36773: ghostscript - Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free ...↗2020
▶
CVE-2020-36773 — Use After Free in Artifex Ghostscript | cvebase