A w3m security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-5796-1: w3m vulnerability

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Ubuntu Security Notice USN-5796-1
January 09, 2023

w3m vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

w3m could be made to crash or run programs as your login if it opened a
malicious website.

Software Description:
- w3m: WWW browsable pager with excellent tables/frames support

Details:

It was discovered that w3m incorrectly handled certain HTML files. A remote
attacker could use this issue to cause w3m 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 22.10:
w3m 0.5.3+git20220429-1ubuntu0.1

Ubuntu 22.04 LTS:
w3m 0.5.3+git20210102-6ubuntu0.1

Ubuntu 20.04 LTS:
w3m 0.5.3-37ubuntu0.1

Ubuntu 18.04 LTS:
w3m 0.5.3-36ubuntu0.1

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

References:
https://ubuntu.com/security/notices/USN-5796-1
CVE-2022-38223

Package Information:
https://launchpad.net/ubuntu/+source/w3m/0.5.3+git20220429-1ubuntu0.1
https://launchpad.net/ubuntu/+source/w3m/0.5.3+git20210102-6ubuntu0.1
https://launchpad.net/ubuntu/+source/w3m/0.5.3-37ubuntu0.1
https://launchpad.net/ubuntu/+source/w3m/0.5.3-36ubuntu0.1