High severity · published Jun 2, 2021
CVE-2021-28677
An issue was discovered in Pillow before 8.2.0
7.5
CVSS
2.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
33 · source: NVD
PI
Pillow · Python
before 8.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28677
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28677
Patch
https://github.com/python-pillow/Pillow/pull/5377
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
Third Party Advisory
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fix-eps-dos-on-open
Third Party Advisory
https://security.gentoo.org/glsa/202107-33
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