CVE-2018-6952 : A double free exists in the another_hunk function in pch.c in GNU patch through

A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6.

Published 2018-02-13 19:29:01

Updated 2019-04-17 20:29:02

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2018-6952

GNU » Patch
Versions up to, including, (<=) 2.7.6
cpe:2.3:a:gnu:patch:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

11.38%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 93 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-415 Double Free

The product calls free() twice on the same memory address.

Assigned by: nvd@nist.gov (Primary)

https://savannah.gnu.org/bugs/index.php?53133

GNU patch - Bugs: bug #53133, double free in another_hunk() [Savannah]
Vendor Advisory
http://www.securityfocus.com/bid/103047

GNU Patch 'another_hunk()' Function Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://security.gentoo.org/glsa/201904-17

Patch: Multiple vulnerabilities (GLSA 201904-17) — Gentoo security

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2019:2033

RHSA-2019:2033 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url

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