Your submission was sent successfully! Close

Thank you for contacting us. A member of our team will be in touch shortly. Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2021-33391

Publication date 17 February 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.

Read the notes from the security team

Status

Package Ubuntu Release Status
tidy-html5 24.10 oracular
Fixed 2:5.6.0-11ubuntu1
24.04 LTS noble
Fixed 2:5.6.0-11ubuntu1
23.10 mantic
Fixed 2:5.6.0-11ubuntu0.23.10.1
23.04 lunar
Fixed 2:5.6.0-11ubuntu0.23.04.1
22.10 kinetic Ignored end of life, was needed
22.04 LTS jammy
Fixed 2:5.6.0-11ubuntu0.22.04.1
20.04 LTS focal
Fixed 2:5.6.0-11ubuntu0.20.04.1
18.04 LTS bionic
Vulnerable
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Ignored end of standard support

Notes

mdeslaur

the commit below is just one of a long list of commits that are required to remove recursion from tidy-html5.

Patch details

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

Package Patch details
tidy-html5

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-6483-1
    • HTML Tidy vulnerability
    • 15 November 2023

Other references