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CVE-2021-28677 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/python-pillow/Pillow/pull/5377	CVE	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html	CVE	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/	CVE
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fix-eps-dos-on-open	CVE	Third Party Advisory
https://security.gentoo.org/glsa/202107-33	CVE	Third Party Advisory
https://github.com/python-pillow/Pillow/pull/5377	[email protected]	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html	[email protected]	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/	[email protected]
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fix-eps-dos-on-open	[email protected]	Third Party Advisory
https://security.gentoo.org/glsa/202107-33	[email protected]	Third Party Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]

Affected Products

Product	Versions
python pillow	< 8.2.0
CPE cpe:2.3:a:python:pillow:::::::: Remediation No remediation found in references.
fedoraproject fedora	33
CPE cpe:2.3:o:fedoraproject:fedora:33:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Sep 14, 2021	Modified Analysis	[email protected]
Jul 22, 2021	CVE Modified	[email protected]
Jul 15, 2021	CVE Modified	[email protected]
Jun 9, 2021	Initial Analysis	[email protected]
Jun 3, 2021	CVE Modified	[email protected]