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3proxy: Buffer overflow


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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


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


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


There is no known workaround at this time.


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


Page updated April 22, 2007

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