CVE-2023-4255CWE-787

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

Medium · published December 21, 2023

CVSS v3.1
5.5
EPSS
0%
Percentile
24.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00322 · 24.0th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2023-12-21T16:08Z
EPSS history
Timeline
  • 21 DEC 16:08Z
    W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)
    cvelistv5