1. Ubuntu Security Notices
  2. USN-6483-1

USN-6483-1: HTML Tidy vulnerability

Publication date

15 November 2023

Overview

tidy-html5 could be made to crash or run programs if it opened a specially crafted file.

Releases

Packages

  • tidy-html5 - HTML/XML syntax checker and reformatter

Details

Neeraj Pal discovered that HTML Tidy incorrectly handled parsing certain
HTML data. If a user or automated system were tricked into parsing
specially crafted HTML data, a remote attacker could cause HTML Tidy to
consume resources, leading to a denial of service, or possibly execute
arbitrary code.

Neeraj Pal discovered that HTML Tidy incorrectly handled parsing certain
HTML data. If a user or automated system were tricked into parsing
specially crafted HTML data, a remote attacker could cause HTML Tidy to
consume resources, leading to a denial of service, or possibly execute
arbitrary code.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
23.10 mantic libtidy5deb1 –  2:5.6.0-11ubuntu0.23.10.1
tidy –  2:5.6.0-11ubuntu0.23.10.1
23.04 lunar libtidy5deb1 –  2:5.6.0-11ubuntu0.23.04.1
tidy –  2:5.6.0-11ubuntu0.23.04.1
22.04 jammy libtidy5deb1 –  2:5.6.0-11ubuntu0.22.04.1
tidy –  2:5.6.0-11ubuntu0.22.04.1
20.04 focal libtidy5deb1 –  2:5.6.0-11ubuntu0.20.04.1
tidy –  2:5.6.0-11ubuntu0.20.04.1

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References

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