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OpenAdvisories
Medium USN-6580-1 1 CVE

w3m vulnerability

Published Jan 15, 2024 · Updated Jun 29, 2026

Ecosystem: Ubuntu

Summary

It was discovered that w3m incorrectly handled certain HTML files.
An attacker could possibly use this issue to cause a crash or
execute arbitrary code.

Fixed packages 4

ReleasePackageFixed in
Ubuntu · 20.04 LTS 20.04:LTS w3m 0.5.3-37ubuntu0.2
Ubuntu · 22.04 LTS 22.04:LTS w3m 0.5.3+git20210102-6ubuntu0.2
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS w3m 0.5.3-15ubuntu0.2+esm2
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS w3m 0.5.3-36ubuntu0.1+esm1

Vulnerabilities 1

  • Medium 5.5
    CVE-2023-4255

    W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)

    An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw…

    Fedora Fedora Extra Packages for Enterprise Linux w3m Linux Debian Ubuntu

References

  • report
    https://ubuntu.com/security/CVE-2023-4255