Gentoo: GLSA-200909-15: Lynx: Arbitrary command execution
Summary
Gentoo Linux Security Advisory GLSA 200909-15
https://security.gentoo.org/
Severity: Normal
Title: Lynx: Arbitrary command execution
Date: September 12, 2009
Bugs: #243058
ID: 200909-15
Synopsis
=======
An incomplete fix for an issue related to the Lynx URL handler might
allow for the remote execution of arbitrary commands.
Background
=========
Lynx is a fully-featured WWW client for users running
cursor-addressable, character-cell display devices such as vt100
terminals and terminal emulators.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-client/lynx < 2.8.6-r4 >= 2.8.6-r4
==========
Clint Ruoho reported that the fix for CVE-2005-2929 (GLSA 200511-09)
only disabled the lynxcgi:// handler when not using the advanced mode.
Impact
=====
A remote attacker can entice a user to access a malicious HTTP server,
causing Lynx to execute arbitrary commands. NOTE: The advanced mode is
not enabled by default. Successful exploitation requires the
"lynxcgi://" protocol to be registered with lynx on the victim's
system.
Workaround
=========
There is no known workaround at this time.
Resolution
=========
All Lynx users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose =www-client/lynx-2.8.6-r4
References
=========
[ 1 ] CVE-2005-2929
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2929
[ 2 ] CVE-2008-4690
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4690
[ 3 ] GLSA 200511-09
https://security.gentoo.org/glsa/200511-09
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/200909-15
Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
======
Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5/
Resolution
References
Availability
Concerns
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