3proxy: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200704-17 / 3proxy
Release Date	April 22, 2007
Latest Revision	April 22, 2007: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-proxy/3proxy	< 0.5.3h	>= 0.5.3h	All supported architectures

Related bugreports: #174429

Synopsis

A vulnerability has been discovered in 3proxy allowing for the remote execution of arbitrary code.

2. Impact Information

Background

3proxy is a multi-protocol proxy, including HTTP/HTTPS/FTP and SOCKS support.

Description

The 3proxy development team reported a buffer overflow in the logurl() function when processing overly long requests.

Impact

A remote attacker could send a specially crafted transparent request to the proxy, resulting in the execution of arbitrary code with privileges of the user running 3proxy.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All 3proxy users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-proxy/3proxy-0.5.3h"

4. References

CVE-2007-2031

Updated April 22, 2007

Summary: This is a Gentoo Linux Security Advisory

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