python-pillow/pillow · Security
Potential infinite loop in Pillow
- GHSA ID
- GHSA-7r7m-5h27-29hp
- CVE ID
- CVE-2021-28676
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v4
- 8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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.
CWEs
- CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-28676 ↗
- https://github.com/python-pillow/Pillow/pull/5377 ↗
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos ↗
- https://security.gentoo.org/glsa/202107-33 ↗
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html ↗
- https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL ↗
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL ↗
- https://github.com/advisories/GHSA-7r7m-5h27-29hp ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-92.yaml ↗