Weex: Format string vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200510-09 / Weex
Release Date	October 08, 2005
Latest Revision	October 08, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-ftp/weex	< 2.6.1.5-r1	>= 2.6.1.5-r1	All supported architectures

Related bugreports: #107849

Synopsis

Weex contains a format string error that may be exploited by malicious servers to execute arbitrary code.

2. Impact Information

Background

Weex is a non-interactive FTP client typically used to update web pages.

Description

Ulf Harnhammar discovered a format string bug in Weex that can be triggered when it is first run (or when its cache files are rebuilt, using the -r option).

Impact

An attacker could setup a malicious FTP server which, when accessed using Weex, could trigger the format string bug and end up executing arbitrary code with the rights of the user running Weex.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Weex users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-ftp/weex-2.6.1.5-r1"

4. References

CAN-2005-3150

Updated October 08, 2005

Summary: This is a Gentoo Linux Security Advisory

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