Vulnerability Monitor

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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.

Published

2020-07-28T16:15:12.840

Last Modified

2024-11-21T05:06:24.667

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-191
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	artifex	ghostscript	9.50	Yes
Application	artifex	ghostscript	9.52	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes
Operating System	opensuse	leap	15.1	Yes
Operating System	opensuse	leap	15.2	Yes

References

http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html Mailing List, Third Party Advisory ([email protected])
https://artifex.com/security-advisories/CVE-2020-15900 Vendor Advisory ([email protected])
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b ([email protected])
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b Patch, Third Party Advisory ([email protected])
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c Patch, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202008-20 Third Party Advisory ([email protected])
https://usn.ubuntu.com/4445-1/ Third Party Advisory ([email protected])
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://artifex.com/security-advisories/CVE-2020-15900 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202008-20 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4445-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)