Vulnerability Details : CVE-2021-28676
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.
Products affected by CVE-2021-28676
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28676
0.23%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 43 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28676
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-28676
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28676
-
https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856
Fix FLI DOS -- CVE-2021-28676 · python-pillow/Pillow@bb6c11f · GitHubPatch
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
[SECURITY] Fedora 33 Update: mingw-python-pillow-7.2.0-6.fc33 - package-announce - Fedora Mailing-ListsMailing List
-
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html
[SECURITY] [DLA 2716-1] pillow security updateThird Party Advisory
-
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos
8.2.0 — Pillow (PIL Fork) 8.2.0 documentationRelease Notes;Third Party Advisory
-
https://github.com/python-pillow/Pillow/pull/5377
Security fixes for 8.2.0 by hugovk · Pull Request #5377 · python-pillow/Pillow · GitHubThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
[SECURITY] Fedora 33 Update: mingw-python-pillow-7.2.0-6.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202107-33
Pillow: Multiple vulnerabilities (GLSA 202107-33) — Gentoo securityThird Party Advisory
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