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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/python-pillow/Pillow/commit/bb6c11fb889e6c11b0ee122b828132ee763b5856	Patch
https://github.com/python-pillow/Pillow/pull/5377	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html	Third 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-dos	Release Notes Third Party Advisory
https://security.gentoo.org/glsa/202107-33	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-06-02 16:15

Updated : 2023-12-22 15:15

NVD link : CVE-2021-28676

Mitre link : CVE-2021-28676

CVE.ORG link : CVE-2021-28676

JSON object : View

Products Affected

python

pillow

fedoraproject

fedora

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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