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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

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CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=5d499272b95a6b890a1397e11d20937de000d31b	Patch Vendor Advisory
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c	Patch Third Party Advisory
http://git.ghostscript.com/?p=ghostpdl.git;a=log	Mailing List Vendor Advisory
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b	Patch Third Party Advisory
https://artifex.com/security-advisories/CVE-2020-15900	Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/4445-1/	Third Party Advisory
https://security.gentoo.org/glsa/202008-20	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:artifex:ghostscript:9.50:::::::*
	cpe:2.3:a:artifex:ghostscript:9.52:::::::*

Configuration 2 (hide)

cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:opensuse:leap:15.1:::::::*
	cpe:2.3:o:opensuse:leap:15.2:::::::*

Information

Published : 2020-07-28 09:15

Updated : 2022-04-27 09:28

NVD link : CVE-2020-15900

Mitre link : CVE-2020-15900

JSON object : View

CWE

CWE-787

Out-of-bounds Write

CWE-191

Integer Underflow (Wrap or Wraparound)

Products Affected

canonical

ubuntu_linux

artifex

ghostscript

opensuse

leap

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