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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 24.04 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
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
14.04 LTS trusty Ignored

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