Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.104
EPSS Ranking 92.8%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html
- https://artifex.com/security-advisories/CVE-2020-15900
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
- https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b
- https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c
- https://security.gentoo.org/glsa/202008-20
- https://usn.ubuntu.com/4445-1/
- http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html
- https://artifex.com/security-advisories/CVE-2020-15900
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
- https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b
- https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c
- https://security.gentoo.org/glsa/202008-20
- https://usn.ubuntu.com/4445-1/
Products affected by CVE-2020-15900
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cpe:2.3:a:artifex:ghostscript:9.50
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cpe:2.3:a:artifex:ghostscript:9.52
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:opensuse:leap:15.1
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cpe:2.3:o:opensuse:leap:15.2