CVE-2023-4255 MEDIUM

CVE-2023-4255: W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)

Vendor N/A
Product w3m
Weakness CWE-787
Published December 21, 2023
Last update February 13, 2025
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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 could lead to application crashes, resulting in a denial of service condition.

Key dates

02Disclosure timeline

December 21, 2023 CVE published
February 13, 2025 Record updated