CVE-2021-28677

Publication date 10 May 2021

Last updated 31 March 2026

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
pillow 25.10 questing
Fixed 8.1.2+dfsg-0.1ubuntu1
25.04 plucky
Fixed 8.1.2+dfsg-0.1ubuntu1
24.10 oracular
Fixed 8.1.2+dfsg-0.1ubuntu1
24.04 LTS noble
Fixed 8.1.2+dfsg-0.1ubuntu1
23.10 mantic
Fixed 8.1.2+dfsg-0.1ubuntu1
23.04 lunar
Fixed 8.1.2+dfsg-0.1ubuntu1
22.10 kinetic
Fixed 8.1.2+dfsg-0.1ubuntu1
22.04 LTS jammy
Fixed 8.1.2+dfsg-0.1ubuntu1
21.10 impish
Fixed 8.1.2+dfsg-0.1ubuntu1
21.04 hirsute
Fixed 8.1.2-1ubuntu0.1
20.10 groovy
Fixed 7.2.0-1ubuntu0.3
20.04 LTS focal
Fixed 7.0.0-4ubuntu0.4
18.04 LTS bionic
Fixed 5.1.0-1ubuntu0.6
16.04 LTS xenial
Fixed 3.1.2-0ubuntu1.6+esm3
14.04 LTS trusty
Fixed 2.3.0-1ubuntu3.4+esm5
pillow-python2 25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Ignored end of life
20.04 LTS focal Ignored end of standard support, was needs-triage
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
python-imaging 25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
pillow

Severity score breakdown

Parameter Value
Base score 7.5 · High
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

References

Related Ubuntu Security Notices (USN)

Other references

Access our resources on patching vulnerabilities