CVE-2023-44271

Publication date 3 November 2023

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 10.0.0. It is a Denial of Service that uncontrollably allocates memory to process a given task, potentially causing a service to crash by having it run out of memory. This occurs for truetype in ImageFont when textlength in an ImageDraw instance operates on a long text argument.

Read the notes from the security team

Why is this CVE low priority?

Only consumes memory when very long strings are used as text input

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
pillow 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored end of life, was needed
22.04 LTS jammy
Fixed 9.0.1-1ubuntu0.2
20.04 LTS focal
Fixed 7.0.0-4ubuntu0.8
18.04 LTS bionic
Fixed 5.1.0-1ubuntu0.8+esm2
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
22.04 LTS jammy Not in release
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

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Notes

mdeslaur

upstream patch adds MAX_STRING_LENGTH which defaults to 1,000,000 limit.

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