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Nagios: Buffer overflow


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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


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


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


There is no known workaround at this time.


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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