Double Free Vulnerability in GNU Patch by GNU
CVE-2019-20633

5.5MEDIUM

Key Information:

Vendor

Gnu
Status
Patch
Vendor
CVE Published:
25 March 2020

What is CVE-2019-20633?

A double free vulnerability exists in the GNU Patch utility, specifically within the 'another_hunk' function in the pch.c file. This flaw can be exploited through a specially crafted patch file, potentially leading to a denial of service. The issue arises due to an incomplete fix for a prior vulnerability, allowing attackers to exploit the system. Users of GNU Patch versions up to 2.7.6 should be aware of this risk and take appropriate measures to safeguard their environments.

References

https://savannah.gnu.org/bugs/index.php?56683
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2019-20633 : Double Free Vulnerability in GNU Patch by GNU