CVE-2020-15900

CRITICALEPSS 92th pctl

9.8

CVSS v3

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.

CWE-191 CWE-787Out-of-bounds Write

How to fix

Remediation Available

ghostscriptDebian

Fixed in:9.52.1~dfsg-1CVE-2020-15900

ghostscriptUbuntu

Fixed in:9.50~dfsg-5ubuntu4.1USN-4445-1

libgs9Ubuntu

Fixed in:9.50~dfsg-5ubuntu4.1USN-4445-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

5.19%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Patch2

Vendor Advisory1

artifex.com

Third-Party Advisory4

Other references2

Related Vulnerabilities

Other CWE-191 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0497	Critical	9.8	100%	KEV	Fix
CVE-2020-36221	High	7.5	84%	-	Fix
CVE-2020-36228	High	7.5	83%	-	Fix
CVE-2023-31102	High	7.8	71%	-	Fix
CVE-2024-38063	Critical	9.8	71%	-	Fix
CVE-2017-14496	High	7.5	66%	-	Fix

Common questions

How do I fix CVE-2020-15900?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2020-15900 being actively exploited?

Not that we know of. CVE-2020-15900 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 5.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 92% of all scored CVEs.

How severe is CVE-2020-15900?

CVE-2020-15900 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-15900 affect?

Published advisories record a fix for ghostscript (Debian), ghostscript (Ubuntu), libgs9 (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.