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CVE-2020-15900 Detail

Description

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
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://artifex.com/security-advisories/CVE-2020-15900 Vendor Advisory 
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b Patch  Third Party Advisory 
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c Patch  Third Party Advisory 
https://security.gentoo.org/glsa/202008-20 Third Party Advisory 
https://usn.ubuntu.com/4445-1/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  
CWE-191 Integer Underflow (Wrap or Wraparound) cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-15900
NVD Published Date:
07/28/2020
NVD Last Modified:
11/06/2023
Source:
MITRE