PT-2023-28417 · W3M+5 · W3M+5

Iskindar · Published 2015-12-01 · Updated 2025-10-20 · CVE-2023-4255

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions W3M (affected versions not specified)

Description 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 issue 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2015-2043

ALT-PU-2020-3099

CVE-2023-4255

MGASA-2024-0105

SUSE-SU-2024:0014-1

SUSE-SU-2024_0014-1

USN-6580-1

Affected Products

Alt Linux

Debian

Linuxmint

Suse

Ubuntu

W3M

References · 29

• 🔥 https://github.com/tats/w3m/issues/268 · Exploit
• https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3 · Patch
• https://github.com/tats/w3m/pull/273 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-4255 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2024-0105.html · Security Note
• https://cve.org/CVERecord?id=CVE-2023-4255 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/MKFZQUK7FPWWJQYICDZZ4YWIPUPQ2D3R · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/TODROGVCWZ435HQIZE6ARQC5LPQLIA5C · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-4255 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-4255 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6580-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-4255 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/AULOBQJLXE2KCT5UVQMKGEFL4GFIAOED · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-4255 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:0014-1 · Vendor Advisory