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CVE-2021-33391

Published: 17 February 2023

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.

Notes

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

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
tidy-html5
Launchpad, Ubuntu, Debian
bionic Needed

focal
Released (2:5.6.0-11ubuntu0.20.04.1)
jammy
Released (2:5.6.0-11ubuntu0.22.04.1)
kinetic Ignored
(end of life, was needed)
lunar
Released (2:5.6.0-11ubuntu0.23.04.1)
mantic
Released (2:5.6.0-11ubuntu0.23.10.1)
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)
Patches:
upstream: https://github.com/htacg/tidy-html5/commit/e56716f154f13b14fc5585146a85000fdd26d319
upstream: https://github.com/htacg/tidy-html5/commit/efa61528aa500a1efbd2768121820742d3bb709b

Severity score breakdown

Parameter Value
Base score 9.8
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