VulnerabilityModified
CVE-2020-36773
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).
CRITICAL 9.8EPSS 0.88%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.88% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416, CWE-787
- Affected
- artifex/ghostscript
- Source
- cve@mitre.org
References
- https://bugs.ghostscript.com/show_bug.cgi?id=702229Issue Tracking, Patch
- https://bugzilla.opensuse.org/show_bug.cgi?id=1177922Issue Tracking
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874Broken Link
- https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530Release Notes
- https://bugs.ghostscript.com/show_bug.cgi?id=702229Issue Tracking, Patch
- https://bugzilla.opensuse.org/show_bug.cgi?id=1177922Issue Tracking
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874Broken Link
- https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.