What is CVE-2021-40633?

CVE-2021-40633 is a high-severity vulnerability in Giflib_project Giflib, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.8/10. Published 2022-06-14.

How severe is CVE-2021-40633?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-40633 known to be exploited?

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

Vulnerability in Giflib_project Giflib

CVE-2021-40633

A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file.

EPSS: 0.015 (71.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Giflib_project Giflib — versions 5.1.4
N/a — versions n/a

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

11notes/docker-paperless-ngx

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-40633?: CVE-2021-40633 is a high-severity vulnerability in Giflib_project Giflib, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 8.8/10. Published 2022-06-14.
How severe is CVE-2021-40633?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-40633 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.