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Category:   Application (Generic)  >   SNMPc Vendors:   Castle Rock Computing
SNMPc Network Manager Stack Overflow in Processing Community String Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019953
SecurityTracker URL:
CVE Reference:   CVE-2008-2214   (Links to External Site)
Updated:  May 19 2008
Original Entry Date:  Apr 30 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.1 and prior versions
Description:   A vulnerability was reported in SNMPc Network Manager. A remote user can execute arbitrary code on the target system.

A remote user can send an SNMP TRAP packet with a specially crafted community string to trigger a stack overflow and execute arbitrary code on the target system. The code will run with the privileges of the target service (LocalSystem privileges).

Wade Alcorn and John Heasman of NGSSoftware reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (7.1.1), available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  Critical Vulnerability in SNMPc

Name: Unauthenticated Stack Overflow in SNMPc
Release Date: 30 April 2008
Reference: NGS00526
Discover: Wade Alcorn <> and John Heasman 
Vendor: Castle Rock Computing
Systems Affected: SNMPc versions 7.1 and earlier
Risk: Critical
Status: Published

Wade Alcorn and John Heasman of NGSSoftware have discovered a stack 
overflow vulnerability in Castle Rock Computing SNMPc Network Manager. 
SNMPc Network Manger is a distributed network management system that 
allows monitoring of the network infrastructure. It employs a 
distributed polling agent architecture which uses SNMP TRAPs to provide 
a solution capable of monitoring networks with up to ten thousand 
devices. An SNMP TRAP initiated by a network element is sent to the 
SNMPc Network Manager to allow monitoring of the infrastructure.

Technical Details
The vulnerability can be exploited when an overly long community string 
is sent in the SNMP TRAP packet. The packets format will be valid ASN.1, 
including the length of the community string. An attacker can craft a 
single UDP packet that can lead to the execution of arbitrary code in 
the context of LocalSystem.

Fix Information
NGSSoftware wish to note that Castle Rock Computing were extremely 
pro-active in addressing this issue.

The latest version (SNMPc 7.1.1) can be downloaded from the Castle Rock 
Computing website:

NGSSoftware Insight Security Research
+44(0)208 401 0070

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Software Ltd. Registered office address: 52 Throwley Way, Sutton, SM1
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