CVEvulnerability
CVE-2021-28676
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-835
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.
Affected configurations
• python pillow (< 8.2.0)
• fedoraproject fedora 33
Related
Weakness · CWE (1)
- CWE-835 Loop with Unreachable Exit Condition weakness
References
- https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856 Patch
- https://github.com/python-pillow/Pillow/pull/5377 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/ Mailing List
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202107-33 Third Party Advisory
- https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856 Patch
- https://github.com/python-pillow/Pillow/pull/5377 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/ Mailing List
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202107-33 Third Party Advisory