Home/CVE/A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can
CVE

CVE-2020-15900

A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can

A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t.

This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.

CRITICAL · CVSS 9.8 EPSS 0.217
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-191Integer Underflow (Wrap or Wraparound)
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
artifex ghostscriptall versions
canonical ubuntu linuxall versions
opensuse leapall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Jul 2020 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

6
suse-csafopenSUSE-SU-2024:10783-1
suse-csafopenSUSE-SU-2020:1146-1
usnUSN-4445-1
suse-csafopenSUSE-SU-2020:1142-1
suse-csafSUSE-SU-2020:2095-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://git.ghostscript.com/?p=ghostpdl.git
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.htmlMailing ListThird Party Advisory
https://artifex.com/security-advisories/CVE-2020-15900Vendor Advisory
https://git.ghostscript.com/?p=ghostpdl.git
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31bPatchThird Party Advisory
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