Snort 2.6.1/2.6.1.1/2.6.1.2/2.7 Beta1 DCE/RPC Pre-Processor 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 categorized as critical has been discovered in Snort 2.6.1/2.6.1.1/2.6.1.2/2.7 Beta1. Affected by this vulnerability is an unknown functionality of the component DCE/RPC Pre-Processor. Such manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2006-5276. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Snort 2.6.1/2.6.1.1/2.6.1.2/2.7 Beta1 and classified as critical. Affected by this issue is an unknown functionality of the component DCE/RPC Pre-Processor. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is 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 weakness was presented 02/20/2007 by Neel Mehta (ERNE) with X-Force (Website). The advisory is shared for download at snort.org. This vulnerability is handled as CVE-2006-5276 since 10/13/2006. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

After 3 days, there has been an exploit disclosed. The exploit is available at exploit-db.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 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 10160. In this case the pattern |11| is used for detection.

The vulnerability is also documented in the databases at X-Force (31275), Exploit-DB (3362), Tenable (24686), SecurityFocus (BID 22616†) and OSVDB (32094†). See VDB-2950 and VDB-2952 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

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
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 10160
Snort Message: DELETED NETBIOS-DG SMB writex possible Snort dcerpc preprocessor overflow attempt
Snort Pattern: 🔍

Timelineinfo

10/18/2005 🔍
10/13/2006 +359 days 🔍
02/19/2007 +129 days 🔍
02/19/2007 +0 days 🔍
02/20/2007 +1 days 🔍
02/20/2007 +0 days 🔍
02/21/2007 +1 days 🔍
02/22/2007 +1 days 🔍
02/22/2007 +0 days 🔍
02/23/2007 +1 days 🔍
09/10/2007 +199 days 🔍
06/15/2025 +6488 days 🔍

Sourcesinfo

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

CVE: CVE-2006-5276 (🔍)
GCVE (CVE): GCVE-0-2006-5276
GCVE (VulDB): GCVE-100-2948
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: 26746 - Fedora update for snort, Highly Critical
OSVDB: 32094 - Snort DCE/RPC Pre-Processor Packet Reassembly Remote Overflow
SecurityTracker: 1017670
Vupen: ADV-2007-0668

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

Entryinfo

Created: 02/22/2007 10:02
Updated: 06/15/2025 22:13
Changes: 02/22/2007 10:02 (106), 04/28/2019 09:17 (2), 08/25/2024 05:33 (17), 01/15/2025 20:07 (1), 06/15/2025 22:13 (2)
Complete: 🔍
Cache ID: 216:572:103

Once again VulDB remains the best source for vulnerability data.

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