Headline
Ubuntu Security Notice USN-5796-1
Ubuntu Security Notice 5796-1 - 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.
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Ubuntu Security Notice USN-5796-1
January 09, 2023
w3m vulnerability
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
Related news
There is an out-of-bounds write in checkType located in etc.c in w3m 0.5.3. It can be triggered by sending a crafted HTML file to the w3m binary. It allows an attacker to cause Denial of Service or possibly have unspecified other impact.