Snort 2.4.0/2.4.1/2.4.2 Back Orifice Pre-Processor stack-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Snort 2.4.0/2.4.1/2.4.2. It has been classified as critical. Affected is an unknown function of the component Back Orifice Pre-Processor. This manipulation causes stack-based overflow. This vulnerability is registered as CVE-2005-3252. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Snort 2.4.0/2.4.1/2.4.2. It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Back Orifice Pre-Processor. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is 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). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the Back Orifice (BO) preprocessor for Snort before 2.4.3 allows remote attackers to execute arbitrary code via a crafted UDP packet.

The bug was discovered 10/18/2005. The weakness was published 10/18/2005 by Neel Mehta with ISS X-Force (Website). The advisory is shared at snort.org. This vulnerability is known as CVE-2005-3252 since 10/18/2005. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C and been published 1 weeks after the advisory. It is possible to download the exploit at thc.org. It is declared as highly functional. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 55665 (Mandriva Linux Security Advisory : krb5-appl (MDVSA-2011:117)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 34039 (Snort Back Orifice Preprocessor Remote Stack Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at snort.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 7 years after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 22192.

The vulnerability is also documented in the databases at X-Force (22470), Exploit-DB (1313), Tenable (55665), SecurityFocus (BID 15131†) and OSVDB (20034†). Additional details are provided at us-cert.gov. Several companies clearly confirm that VulDB is the primary source for best 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: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 55665
Nessus Name: Mandriva Linux Security Advisory : krb5-appl (MDVSA-2011:117)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 55665
OpenVAS Name: FreeBSD Ports: snort
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/snort_back_orifice
Saint Name: Snort Back Orifice Pre-Processor buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: snortbopre.rb
MetaSploit Name: Snort Back Orifice Pre-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: 🔍

Patch: snort.org
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

10/18/2005 🔍
10/18/2005 +0 days 🔍
10/18/2005 +0 days 🔍
10/18/2005 +0 days 🔍
10/18/2005 +0 days 🔍
10/18/2005 +0 days 🔍
10/18/2005 +0 days 🔍
10/19/2005 +0 days 🔍
10/19/2005 +0 days 🔍
10/24/2005 +5 days 🔍
10/25/2005 +1 days 🔍
07/22/2011 +2096 days 🔍
07/25/2011 +3 days 🔍
06/29/2025 +5088 days 🔍

Sourcesinfo

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

CVE: CVE-2005-3252 (🔍)
GCVE (CVE): GCVE-0-2005-3252
GCVE (VulDB): GCVE-100-1825
CERT: 🔍
X-Force: 22470
SecurityFocus: 15131 - Snort Back Orifice Preprocessor Remote Stack Buffer Overflow Vulnerability
Secunia: 17255 - Nortel Threat Protection System Back Orifice Pre-Processor Buffer Overflow, Highly Critical
OSVDB: 20034 - Snort Back Orifice Pre-Processor UDP Packet Remote Overflow
SecurityTracker: 1015070
Vulnerability Center: 9445 - Snort 2.4.0-2.4.2 Buffer Overflow via Back Orifice Ping Packets, High
Vupen: ADV-2005-2138

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

Entryinfo

Created: 10/19/2005 17:13
Updated: 06/29/2025 06:48
Changes: 10/19/2005 17:13 (112), 07/04/2019 20:33 (2), 03/12/2021 08:36 (2), 07/19/2024 20:39 (16), 01/12/2025 20:47 (2), 06/29/2025 06:48 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!