TITLE:
Nagios Content-Length Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA20123

VERIFY ADVISORY:
http://secunia.com/advisories/20123/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Nagios 1.x
http://secunia.com/product/3607/
Nagios 2.x
http://secunia.com/product/9950/

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 an integer overflow error within
the handling of the "Content-Length" HTTP header. This can be
exploited to cause a buffer overflow and may allow arbitrary code
execute via a HTTP request with specially crafted value in 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 1.4.1.

Nagios 2.x:
Update to version 2.3.1.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Sean Finney and Debian.

ORIGINAL ADVISORY:
http://www.nagios.org/development/changelog.php
http://www.nagios.org/development/changelog.php#1x_branch

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------