CVE-2020-15900

high-risk

Published 2020-07-28

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.

Do I need to act?

11.0% chance of exploitation in next 30 days

EPSS score — higher than 89% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (5)

Ghostscript

Ubuntu Linux

Leap

Affected Vendors

Canonical Opensuse Artifex

References (18)

http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html

Vendor Advisory https://artifex.com/security-advisories/CVE-2020-15900

https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890...

Patch https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d209...

Patch https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c

Third Party Advisory https://security.gentoo.org/glsa/202008-20

Third Party Advisory https://usn.ubuntu.com/4445-1/