CVE-2021-28677

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.

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.44%

Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org

Affected: n/a n/a

References

Link	Tags
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fix-eps-dos-on-open	third party advisory
https://github.com/python-pillow/Pillow/pull/5377	third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/	vendor advisory
https://security.gentoo.org/glsa/202107-33	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-28677?: CVE-2021-28677 has been scored as a high severity vulnerability.
How to fix CVE-2021-28677?: To fix CVE-2021-28677, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28677 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-28677 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.