Nortel Threat Protection up to 4.5.1 DCE/RPC Preprocessor stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Nortel Threat Protection up to 4.5.1. This issue affects some unknown processing of the component DCE/RPC Preprocessor. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2006-5276. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Nortel Threat Protection up to 4.5.1. Affected is an unknown code block of the component DCE/RPC Preprocessor. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the DCE/RPC preprocessor in Snort before 2.6.1.3, and 2.7 before beta 2; and Sourcefire Intrusion Sensor; allows remote attackers to execute arbitrary code via crafted SMB traffic.

The bug was discovered 02/19/2007. The weakness was disclosed 02/20/2007 by Neel Mehta (ERNE) with X-Force (Website). The advisory is shared for download at iss.net. This vulnerability is traded as CVE-2006-5276 since 10/13/2006. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by metasploit and been published 3 days after the advisory. The exploit is shared for download at immunitysec.com. It is declared as highly functional. As 0-day the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 24686 (FreeBSD : snort -- DCE/RPC preprocessor vulnerability (afdf500f-c1f6-11db-95c5-000c6ec775d9)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 34053 (Snort DCE/RPC Packet Reassembly Stack Buffer Overflow).

Upgrading to version 2.6.1.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at www130.nortelnetworks.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 1 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 10158. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5185.

The vulnerability is also documented in the databases at X-Force (31275), Exploit-DB (18723), Tenable (24686), SecurityFocus (BID 22616†) and OSVDB (32094†). Further details are available at computerworld.com. The entries VDB-82, VDB-332, VDB-333 and VDB-427 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: metasploit
Download: 🔍

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Nessus ID: 24686
Nessus Name: FreeBSD : snort -- DCE/RPC preprocessor vulnerability (afdf500f-c1f6-11db-95c5-000c6ec775d9)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58055
OpenVAS Name: FreeBSD Ports: snort
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/snort_dcerpc
Saint Name: Snort DCE/RPC preprocessor buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: snort_dce_rpc.rb
MetaSploit Name: Snort 2 DCE/RPC Preprocessor Buffer Overflow
MetaSploit File: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Threat Protection 2.6.1.3
Patch: www130.nortelnetworks.com

Snort ID: 10158
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/18/2005 🔍
10/13/2006 +359 days 🔍
02/19/2007 +129 days 🔍
02/19/2007 +0 days 🔍
02/19/2007 +0 days 🔍
02/19/2007 +0 days 🔍
02/20/2007 +1 days 🔍
02/20/2007 +0 days 🔍
02/21/2007 +1 days 🔍
02/21/2007 +0 days 🔍
02/22/2007 +1 days 🔍
02/22/2007 +0 days 🔍
02/23/2007 +1 days 🔍
02/26/2007 +3 days 🔍
04/09/2012 +1869 days 🔍
06/15/2025 +4815 days 🔍

Sourcesinfo

Vendor: nortel-canada.com

Advisory: iss.net
Researcher: Neel Mehta (ERNE)
Organization: X-Force
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-5276 (🔍)
GCVE (CVE): GCVE-0-2006-5276
GCVE (VulDB): GCVE-100-2952
CERT: 🔍
X-Force: 31275 - Snort, Sourcefire, and Nortel Threat Protection IDS/IPS DCE/RPC buffer overflow, High Risk
SecurityFocus: 22616 - Snort/Sourcefire DCE/RPC Packet Reassembly Stack Buffer Overflow Vulnerability
Secunia: 24239 - Nortel Threat Protection System DCE/RPC Preprocessor Buffer Overflow, Highly Critical
OSVDB: 32094 - Snort DCE/RPC Pre-Processor Packet Reassembly Remote Overflow
SecurityTracker: 1017670
Vulnerability Center: 14373 - Snort and Sourcefire Intrusion Sensor Buffer Overflow via DCE/RPC Packets, Critical
Vupen: ADV-2007-0656

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/22/2007 10:30
Updated: 06/15/2025 22:34
Changes: 02/22/2007 10:30 (123), 07/15/2019 11:09 (2), 08/25/2024 06:54 (17), 01/15/2025 20:07 (1), 06/15/2025 22:34 (2)
Complete: 🔍
Cache ID: 216::103

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