CVE-2018-6196

Publication date 24 January 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

w3m through 0.5.3 is prone to an infinite recursion flaw in HTMLlineproc0 because the feed_table_block_tag function in table.c does not prevent a negative indent value.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
w3m	17.10 artful	Fixed 0.5.3-34ubuntu0.1
	16.04 LTS xenial	Fixed 0.5.3-26ubuntu0.2
	14.04 LTS trusty	Fixed 0.5.3-15ubuntu0.2

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
w3m	Upstream: 8354763

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3555-2
w3m vulnerabilities
1 February 2018

USN-3555-1
w3m vulnerabilities
1 February 2018