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CVE-2021-28677

Published: 10 May 2021

An issue was discovered in Pillow before 8.2.0. For EPS data, the readline implementation used in EPSImageFile has to deal with any combination of \r and \n as line endings. It used an accidentally quadratic method of accumulating lines while looking for a line ending. A malicious EPS file could use this to perform a DoS of Pillow in the open phase, before an image was accepted for opening.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
pillow
Launchpad, Ubuntu, Debian
focal
Released (7.0.0-4ubuntu0.4)
groovy
Released (7.2.0-1ubuntu0.3)
hirsute
Released (8.1.2-1ubuntu0.1)
impish
Released (8.1.2+dfsg-0.1ubuntu1)
jammy
Released (8.1.2+dfsg-0.1ubuntu1)
kinetic
Released (8.1.2+dfsg-0.1ubuntu1)
lunar
Released (8.1.2+dfsg-0.1ubuntu1)
upstream
Released (8.2.0)
xenial Needs triage

trusty Needs triage

bionic
Released (5.1.0-1ubuntu0.6)
mantic
Released (8.1.2+dfsg-0.1ubuntu1)
Patches:
upstream: https://github.com/python-pillow/Pillow/commit/5a5e6db0abf4e7a638fb1b3408c4e495a096cb92
pillow-python2
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(end of life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

python-imaging
Launchpad, Ubuntu, Debian
jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream Needs triage

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H