Nagios: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200605-07 / nagios
Release Date	May 07, 2006
Latest Revision	May 25, 2006: 03
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-analyzer/nagios-core	< 1.4.1	>= 1.4.1	All supported architectures

Related bugreports: #132159, #133487

Synopsis

Nagios is vulnerable to a buffer overflow which may lead to remote execution of arbitrary code.

2. Impact Information

Background

Nagios is an open source host, service and network monitoring program.

Description

Sebastian Krahmer of the SuSE security team discovered a buffer overflow vulnerability in the handling of a negative HTTP Content-Length header.

Impact

A buffer overflow in Nagios CGI scripts under certain web servers allows remote attackers to execute arbitrary code via a negative content length HTTP header.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Nagios users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/nagios-core-1.4.1"

4. References

Page updated May 07, 2006

Summary: This is a Gentoo Linux Security Advisory

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