Monkeyd Denial of Service vulnerability

Security Team Contact Address

Updated February 11, 2004

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200402-03 / monkeyd
Release Date	February 11, 2004
Latest Revision	February 11, 2004: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-servers/monkeyd	< 0.8.2	>= 0.8.2	All supported architectures

Related bugreports: #41156

Synopsis

A bug in get_real_string() function allows for a Denial of Service attack to be launched against the webserver.

2. Impact Information

Background

The Monkey HTTP daemon is a Web server written in C that works under Linux and is based on the HTTP/1.1 protocol. It aims to develop a fast, efficient and small web server.

Description

A bug in the URI processing of incoming requests allows for a Denial of Service to be launched against the webserver, which may cause the server to crash or behave sporadically.

Impact

Although there are no public exploits known for bug, users are recommended to upgrade to ensure the security of their infrastructure.

3. Resolution Information

Workaround

There is no immediate workaround; a software upgrade is required. The vulnerable function in the code has been rewritten.

Resolution

All users are recommended to upgrade monkeyd to 0.8.2:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=www-servers/monkeyd-0.8.2"
# emerge ">=www-servers/monkeyd-0.8.2"

4. References

CVS Patch