Cisco IOS 12.1yd/12.2t/12.3/12.3t CME/SRST Skinny Call Control Protocol denial of service

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

Summaryinfo

A vulnerability was found in Cisco IOS 12.1yd/12.2t/12.3/12.3t. It has been classified as problematic. This impacts an unknown function of the component CME/SRST Skinny Call Control Protocol. This manipulation causes denial of service. This vulnerability appears as CVE-2005-0186. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS 12.1yd/12.2t/12.3/12.3t (Router Operating System). Affected by this vulnerability is an unknown code block of the component CME/SRST Skinny Call Control Protocol. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

Cisco IOS 12.1YD, 12.2T, 12.3 and 12.3T, when configured for the IOS Telephony Service (ITS), CallManager Express (CME) or Survivable Remote Site Telephony (SRST), allows remote attackers to cause a denial of service (device reboot) via a malformed packet to the SCCP port.

The bug was discovered 01/19/2005. The weakness was presented 01/19/2005 with Cisco (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2005-0186 since 01/28/2005. 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. MITRE ATT&CK project uses the attack technique T1499 for this issue.

After immediately, there has been an exploit disclosed. 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 16217 (Cisco IOS SCCP Control Protocol Malformed Message DoS (CSCee08584)), 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 43085 (Cisco IOS Skinny Call Control Protocol Handler Remote Denial of Service Vulnerability).

Upgrading to version 12.3(8)T eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (18956), Tenable (16217), SecurityFocus (BID 12307†), OSVDB (13084†) and Secunia (SA13913†). Several companies clearly confirm that VulDB is the primary source for best 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: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 16217
Nessus Name: Cisco IOS SCCP Control Protocol Malformed Message DoS (CSCee08584)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: IOS 12.3(8)T
Patch: cisco.com
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

01/19/2005 🔍
01/19/2005 +0 days 🔍
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01/19/2005 +0 days 🔍
01/20/2005 +1 days 🔍
01/20/2005 +0 days 🔍
01/24/2005 +3 days 🔍
01/26/2005 +2 days 🔍
01/28/2005 +2 days 🔍
07/05/2025 +7463 days 🔍

Sourcesinfo

Vendor: cisco.com

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

CVE: CVE-2005-0186 (🔍)
GCVE (CVE): GCVE-0-2005-0186
GCVE (VulDB): GCVE-100-1153

OVAL: 🔍

X-Force: 18956 - Cisco IOS SCCP denial of service, Medium Risk
SecurityFocus: 12307 - Cisco IOS Skinny Call Control Protocol Handler Remote Denial Of Service Vulnerability
Secunia: 13913 - Cisco IOS SCCP Control Protocol Message Denial of Service, Less Critical
OSVDB: 13084 - Cisco IOS SCCP Control Protocol Malformed Message DoS
SecurityTracker: 1012945
Vulnerability Center: 6911 - [cisco-sa-20050119-itscme] DoS in Cisco IOS SCCP Handler via Malformed TCP Packets, High

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

Entryinfo

Created: 01/24/2005 11:04
Updated: 07/05/2025 16:40
Changes: 01/24/2005 11:04 (99), 07/01/2019 09:27 (2), 07/05/2025 16:40 (17)
Complete: 🔍
Cache ID: 216::103

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

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