ELinks: Arbitrary Samba command execution

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200701-27 / elinks
Release Date	January 30, 2007
Latest Revision	January 30, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-client/elinks	< 0.11.2	>= 0.11.2	All supported architectures

Related bugreports: #155358

Synopsis

ELinks does not properly validate "smb://" URLs, making it vulnerable to the execution of arbitrary Samba commands.

2. Impact Information

Background

ELinks is a text mode web browser.

Description

Teemu Salmela discovered an error in the validation code of "smb://" URLs used by ELinks, the same issue as reported in GLSA 200612-16 concerning Links.

Impact

A remote attacker could entice a user to browse to a specially crafted "smb://" URL and execute arbitrary Samba commands, which would allow the overwriting of arbitrary local files or the upload or download of arbitrary files. This vulnerability can be exploited only if "smbclient" is installed on the victim's computer, which is provided by the "samba" Gentoo package.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ELinks users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/elinks-0.11.2"

4. References

CVE-2006-5925

Updated January 30, 2007

Summary: This is a Gentoo Linux Security Advisory

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