Digital Armaments Security Advisory 01.16.2006: CMU SNMP utilities snmptrad Format String Vulnerability
CMU SNMP utilities snmptrad Format String Vulnerability
Digital Armaments advisory is 01.04.2006
http://www.digitalarmaments.com/2006040164883273.html
I. Background
The package is CMU-SNMP utilities. In this package snmptrapd is an SNMP
application that receives and logs SNMP TRAP and INFORM messages. This daemon
by default is to listen on UDP port 162 on all IPv4 interfaces. Since 162 is a
privileged port, snmptrapd must typically be run as root.
For many information or detail about the software you can refer to the vendor's
homepage:
http://www.gaertner.de/snmp/
II. Problem Description
There is a format string vulnerability in the snmptrapd server from the
cmu-snmp package. The vulnerability persist in the snmp_input() function. An
attacker could abuse this vulnerability from remote while sending specially
crafted packets. Successful exploitation consist in arbitrary code execution,
with root privileges by default.
III. Detection
This problem has been detected and tested on latest versions:
snmptrapd from cmu-snmp-linux-3.7 package
snmptrapd from cmu-snmp-linux-3.6 package
IV. Impact analysis
Successful exploitation allow an attacker to gain access to the system with the
root privileges (by default). Exploit code is required.
V. Solution
The vendor has given no response.
First notification 12.22.2005.
Second notification 01.09.2006.
No new version will be available.
VI. Credit
Seregorn - seregon@xxxxxxxxxxxxx is credited with this discovery.
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