Gentoo Logo

monkeyd: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200504-14 / monkeyd
Release Date April 15, 2005
Latest Revision May 22, 2006: 02
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-servers/monkeyd < 0.9.1 >= 0.9.1 All supported architectures

Related bugreports: #87916


Format string and Denial of Service vulnerabilities have been discovered in the monkeyd HTTP server, potentially resulting in the execution of arbitrary code.

2.  Impact Information


monkeyd is a fast, efficient, small and easy to configure web server for Linux.


Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a double expansion error in monkeyd, resulting in a format string vulnerability. Ciaran McCreesh of Gentoo Linux discovered a Denial of Service vulnerability, a syntax error caused monkeyd to zero out unallocated memory should a zero byte file be requested.


The format string vulnerability could allow an attacker to send a specially crafted request to the monkeyd server, resulting in the execution of arbitrary code with the permissions of the user running monkeyd. The DoS vulnerability could allow an attacker to disrupt the operation of the web server, should a zero byte file be accessible.

3.  Resolution Information


There is no known workaround at this time.


All monkeyd users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/monkeyd-0.9.1"

4.  References


Page updated April 15, 2005

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.

Copyright 2001-2015 Gentoo Foundation, Inc. Questions, Comments? Contact us.