Critical Vulnerability in SNMPc

2008.05.15
Risk: High
Local: Yes
Remote: No
CWE: CWE-119


CVSS Base Score: 10/10
Impact Subscore: 10/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

======= Summary ======= Name: Unauthenticated Stack Overflow in SNMPc Release Date: 30 April 2008 Reference: NGS00526 Discover: Wade Alcorn <wade (at) ngssoftware (dot) com [email concealed]> and John Heasman <john (at) ngssoftware (dot) com [email concealed]> Vendor: Castle Rock Computing Systems Affected: SNMPc versions 7.1 and earlier Risk: Critical Status: Published =========== Description =========== 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: http://www.castlerock.com/. NGSSoftware Insight Security Research http://www.ngssoftware.com/ http://www.databasesecurity.com/ http://www.nextgenss.com/ +44(0)208 401 0070 -- E-MAIL DISCLAIMER The information contained in this email and any subsequent correspondence is private, is solely for the intended recipient(s) and may contain confidential or privileged information. For those other than the intended recipient(s), any disclosure, copying, distribution, or any other action taken, or omitted to be taken, in reliance on such information is prohibited and may be unlawful. If you are not the intended recipient and have received this message in error, please inform the sender and delete this mail and any attachments. The views expressed in this email do not necessarily reflect NGS policy. NGS accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the NGS domain. NGS and NGSSoftware are trading names of Next Generation Security Software Ltd. Registered office address: 52 Throwley Way, Sutton, SM1 4BF with Company Number 04225835 and VAT Number 783096402


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