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Pound format string vulnerability


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200405-08 / pound
Release Date May 18, 2004
Latest Revision May 22, 2006: 02
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-servers/pound <= 1.5 >= 1.6 All supported architectures

Related bugreports: #50421


There is a format string flaw in Pound, allowing remote execution of arbitrary code with the rights of the Pound process.

2.  Impact Information


Pound is a reverse proxy, load balancer and HTTPS front-end. It allows to distribute the load on several web servers and offers a SSL wrapper for web servers that do not support SSL directly.


A format string flaw in the processing of syslog messages was discovered and corrected in Pound.


This flaw may allow remote execution of arbitrary code with the rights of the Pound daemon process. By default, Gentoo uses the "nobody" user to run the Pound daemon.

3.  Resolution Information


There is no known workaround at this time. All users are advised to upgrade to the latest available version of Pound.


All users of Pound should upgrade to the latest stable version:

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=www-servers/pound-1.6"
# emerge ">=www-servers/pound-1.6"

4.  References


Page updated May 18, 2004

Summary: This is a Gentoo Linux Security Advisory

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