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CVE-2023-4255

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

Published: Dec 21, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-787
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.3%
Top 76.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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 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.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

w3mtats
Mixed
Consumer Software / browser
extra packages for enterprise linuxfedoraproject
On-premOS
Operating Systems / linux-distro
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
w3mn/a
FedoraFedora
On-premOS
Operating Systems / linux-distro
tatsoss-projectConsumer Softwareaka w3m
fedoraprojectoss-projectUSOperating Systemsaka fedora project
fedoraoss-projectOperating Systemsaka fedora linux
and 1 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=2255207
bugzilla.redhat.com
https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3
github.com
https://github.com/tats/w3m/issues/268
github.com
and 4 more references View all →

Timeline

Published
Dec 21, 2023
Last Updated
Nov 21, 2024

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