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.
Infinite Loop
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
VendorProductVersion
pythonpillow
𝑥
< 8.2.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
pillow
bullseye (security)
8.1.2+dfsg-0.3+deb11u2
fixed
bullseye
8.1.2+dfsg-0.3+deb11u2
fixed
buster
ignored
bookworm
9.4.0-1.1+deb12u1
fixed
bookworm (security)
9.4.0-1.1+deb12u1
fixed
sid
10.4.0-1
fixed
trixie
10.4.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pillow
noble
Fixed 8.1.2+dfsg-0.1ubuntu1
released
mantic
Fixed 8.1.2+dfsg-0.1ubuntu1
released
lunar
Fixed 8.1.2+dfsg-0.1ubuntu1
released
kinetic
Fixed 8.1.2+dfsg-0.1ubuntu1
released
jammy
Fixed 8.1.2+dfsg-0.1ubuntu1
released
impish
Fixed 8.1.2+dfsg-0.1ubuntu1
released
hirsute
Fixed 8.1.2-1ubuntu0.1
released
groovy
Fixed 7.2.0-1ubuntu0.3
released
focal
Fixed 7.0.0-4ubuntu0.4
released
bionic
Fixed 5.1.0-1ubuntu0.6
released
xenial
needs-triage
trusty
needs-triage
pillow-python2
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
ignored
focal
needs-triage
bionic
dne
xenial
dne
trusty
dne
python-imaging
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
Common Weakness Enumeration
References
https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856
https://github.com/python-pillow/Pillow/pull/5377
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
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://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856
https://github.com/python-pillow/Pillow/pull/5377
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28676-fix-fli-dos
https://security.gentoo.org/glsa/202107-33