Bug 1539127 – CVE-2018-6198 w3m: insecure temporary files creation when ~/.w3m is unwritable

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Bug 1539127 - (CVE-2018-6198) CVE-2018-6198 w3m: insecure temporary files creation when ~/.w3m is unwritable

Summary:	CVE-2018-6198 w3m: insecure temporary files creation when ~/.w3m is unwritable

Status:	CLOSED NEXTRELEASE

Aliases:	CVE-2018-6198

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180123,reported=2...
Keywords:	Security

Depends On:	1539128 1539129 1539130
Blocks:
	Show dependency tree / graph

Reported:	2018-01-26 13:16 EST by Pedro Sampaio
Modified:	2018-06-24 04:48 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	w3m 0.5.3+git20180125
Doc Type:	If docs needed, set a value
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Environment:
Last Closed:	2018-06-24 04:48:44 EDT
Type:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Pedro Sampaio 2018-01-26 13:16:23 EST

A flaw was found in w3m 0.5.3-34. When ~/.w3m is unwritable, w3m uses /tmp in an insecure fashion, which allows a local attacker to craft a symlink attack to overwrite arbitrary files.

Upstream patch:

https://github.com/tats/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753

Comment 1 Pedro Sampaio 2018-01-26 13:16:43 EST

Created w3m tracking bugs for this issue:

Affects: epel-7 [bug 1539130]
Affects: fedora-all [bug 1539129]

Comment 3 Parag Nemade 2018-06-24 04:48:44 EDT

Fixed for all the requested releases.

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