CVE-2021-28676 Information

Description

An issue was discovered in Pillow before 8.2.0. For FLI data FliDecode did not properly check that the block advance was non-zero potentially leading to an infinite loop on load.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos https://github.com/python-pillow/Pillow/pull/5377 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/ https://security.gentoo.org/glsa/202107-33 https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5