What is CVE-2019-20633?

CVE-2019-20633 is a medium-severity vulnerability in Gnu Patch, classified under Double Free. CVSS score: 5.5/10. Published 2020-03-25.

How severe is CVE-2019-20633?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2019-20633 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Double Free in Gnu Patch

CVE-2019-20633

GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CV…

Vulnerability class: Double Free

EPSS: 0.010 (58.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Gnu Patch
N/a — versions n/a

Weakness classification (CWE)

CWE-415 — Double Free

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-20633?: CVE-2019-20633 is a medium-severity vulnerability in Gnu Patch, classified under Double Free. CVSS score: 5.5/10. Published 2020-03-25.
How severe is CVE-2019-20633?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2019-20633 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.