CVE-2021-34552

moderate-risk

Published 2021-07-13

Pillow through 8.2.0 and PIL (aka Python Imaging Library) through 1.1.7 allow an attacker to pass controlled parameters directly into a convert function to trigger a buffer overflow in Convert.c.

Do I need to act?

0.34% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (4)

Pillow

Debian Linux

Fedora

Affected Vendors

Debian Python Fedoraproject

References (12)

Mailing List https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Release Notes https://pillow.readthedocs.io/en/stable/releasenotes/8.3.0.html#buffer-overflow

Release Notes https://pillow.readthedocs.io/en/stable/releasenotes/index.html

Third Party Advisory https://security.gentoo.org/glsa/202211-10

Mailing List https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Release Notes https://pillow.readthedocs.io/en/stable/releasenotes/8.3.0.html#buffer-overflow

Release Notes https://pillow.readthedocs.io/en/stable/releasenotes/index.html

Third Party Advisory https://security.gentoo.org/glsa/202211-10

/ 100

moderate-risk

Severity 32/34 · Critical

Exploitability 1/34 · Minimal

Exposure 10/34 · Low