VulnerabilityModified
CVE-2021-28676
An issue was discovered in Pillow before 8.2.0.
HIGH 7.5EPSS 2.52%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.52% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- python/pillow · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856Patch
- https://github.com/python-pillow/Pillow/pull/5377Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.htmlThird 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-dosRelease Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202107-33Third Party Advisory
- https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856Patch
- https://github.com/python-pillow/Pillow/pull/5377Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.htmlThird 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-dosRelease Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202107-33Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.