USN-5438-1: HTMLDOC vulnerability

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• htmldoc - HTML processor that generates indexed HTML, PS, and PDF

Details

It was discovered that HTMLDOC did not properly manage memory under certain
circumstances. If a user were tricked into opening a specially crafted HTML
file, a remote attacker could possibly use this issue to cause HTMLDOC to
crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 20.04

• htmldoc - 1.9.7-1ubuntu0.3
• htmldoc-common - 1.9.7-1ubuntu0.3

Ubuntu 18.04

• htmldoc - 1.9.2-1ubuntu0.2
• htmldoc-common - 1.9.2-1ubuntu0.2

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

References

• CVE-2021-23165

Related notices

• USN-5438-2: htmldoc-common, htmldoc