Cisco IOS up to 12.4 Stack Group Bidding Protocol initiates input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS up to 12.4 and classified as critical. Affected by this vulnerability is an unknown functionality of the file initiates of the component Stack Group Bidding Protocol Handler. The manipulation leads to input validation. This vulnerability is documented as CVE-2006-0340. The attack can be initiated remotely. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS up to 12.4 (Router Operating System). This issue affects an unknown part of the file initiates of the component Stack Group Bidding Protocol Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

Unspecified vulnerability in Stack Group Bidding Protocol (SGBP) support in Cisco IOS 12.0 through 12.4 running on various Cisco products, when SGBP is enabled, allows remote attackers on the local network to cause a denial of service (device hang and network traffic loss) via a crafted UDP packet to port 9900.

The bug was discovered 01/18/2006. The weakness was released 01/19/2006 with Cisco (Website). It is possible to read the advisory at cisco.com. The identification of this vulnerability is CVE-2006-0340 since 01/20/2006. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 20744 (Cisco IOS MMP Stack Group Bidding Protocol (SGBP) Crafted UDP Packet Remote DoS (CSCsb11124)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO, running in the context l and relying on port 161. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43105 (Cisco IOS SGBP Remote Denial of Service Vulnerability (cisco-sa-20060118-sgbp)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (24182), Tenable (20744), SecurityFocus (BID 16303†), OSVDB (22624†) and Secunia (SA18490†). Entry connected to this vulnerability is available at VDB-1988. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 20744
Nessus Name: Cisco IOS MMP Stack Group Bidding Protocol (SGBP) Crafted UDP Packet Remote DoS (CSCsb11124)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

01/18/2006 🔍
01/18/2006 +0 days 🔍
01/18/2006 +0 days 🔍
01/18/2006 +0 days 🔍
01/18/2006 +0 days 🔍
01/19/2006 +1 days 🔍
01/19/2006 +0 days 🔍
01/19/2006 +0 days 🔍
01/19/2006 +0 days 🔍
01/20/2006 +0 days 🔍
01/20/2006 +0 days 🔍
01/24/2006 +4 days 🔍
06/23/2025 +7090 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: http://www.cisco.com
Organization: Cisco
Status: Confirmed

CVE: CVE-2006-0340 (🔍)
GCVE (CVE): GCVE-0-2006-0340
GCVE (VulDB): GCVE-100-1991
X-Force: 24182 - Cisco IOS SGBP UDP packet denial of service, Medium Risk
SecurityFocus: 16303 - Cisco IOS SGBP Remote Denial of Service Vulnerability
Secunia: 18490 - Cisco IOS Stack Group Bidding Protocol Denial of Service, Less Critical
OSVDB: 22624 - Cisco IOS MMP Stack Group Bidding Protocol (SGBP) Crafted UDP Packet Remote DoS
SecurityTracker: 1015501
Vulnerability Center: 10176 - [cisco-sa-20060118-sgbp] Cisco IOS SGBP DoS via a Crafted UDP Packet to Port 9900, Medium
Vupen: ADV-2006-0248

See also: 🔍

Entryinfo

Created: 01/24/2006 10:49
Updated: 06/23/2025 02:42
Changes: 01/24/2006 10:49 (93), 09/05/2019 13:33 (1), 06/23/2025 02:42 (18)
Complete: 🔍
Cache ID: 216:44A:103

Be aware that VulDB is the high quality source for vulnerability data.

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