TITLE:
Nagios Content-Length Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA19991

VERIFY ADVISORY:
http://secunia.com/advisories/19991/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Nagios 1.x
http://secunia.com/product/3607/

DESCRIPTION:
A vulnerability has been reported in Nagios, which can be exploited
by malicious people to cause a DoS (Denial of Service) and
potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the
handling of HTTP data. This can be exploited to cause a buffer
overflow by supplying a negative value for the "Content-Length" HTTP
header.

The vulnerability has been reported in the 1.x and 2.x code branches.

SOLUTION:
Update to the fixed versions.
http://www.nagios.org/download/

Nagios 1.x:
Update to version 1.4.

Nagios 2.x:
Update to version 2.3.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Sebastian Krahmer of the SuSE security team.

ORIGINAL ADVISORY:
https://sourceforge.net/mailarchive/forum.php?thread_id=10297806&forum_id=7890

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