| Name | CVE-2021-28676 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2716-1, ELA-546-1 |
| Debian Bugs | 989062 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pillow (PTS) | jessie, jessie (lts) | 2.6.1-2+deb8u9 | fixed |
| stretch (security) | 4.0.0-4+deb9u4 | fixed |
| stretch (lts), stretch | 4.0.0-4+deb9u5 | fixed |
| buster | 5.4.1-2+deb10u3 | vulnerable |
| buster (security) | 5.4.1-2+deb10u6 | vulnerable |
| bullseye (security), bullseye | 8.1.2+dfsg-0.3+deb11u1 | fixed |
| bookworm | 9.4.0-1.1 | fixed |
| trixie | 10.2.0-1 | fixed |
| sid | 10.3.0-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - pillow <ignored> (Minor issue)
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos
https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856