CVE-2023-4255
Published: 2 January 2024
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.
Priority
Status
Package | Release | Status |
---|---|---|
w3m Launchpad, Ubuntu, Debian |
bionic |
Released
(0.5.3-36ubuntu0.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
focal |
Released
(0.5.3-37ubuntu0.2)
|
|
jammy |
Released
(0.5.3+git20210102-6ubuntu0.2)
|
|
lunar |
Released
(0.5.3+git20230121-2ubuntu0.23.04.1)
|
|
mantic |
Released
(0.5.3+git20230121-2ubuntu0.23.10.1)
|
|
noble |
Released
(0.5.3+git20230121-2ubuntu1)
|
|
trusty |
Released
(0.5.3-15ubuntu0.2+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
Patches: upstream: https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |