Cisco VPN 30xx Concentrator up to 3.6.7 SSH Service denial of service

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.
5.3	$0-$5k	0.00

A vulnerability has been found in Cisco VPN 30xx Concentrator up to 3.6.7 (Network Encryption Software) and classified as problematic. This vulnerability affects an unknown code block of the component SSH Service. 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. CVE summarizes:

Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 2.x.x through 3.6.7 allows remote attackers to cause a denial of service (reload) via a malformed SSH initialization packet.

The weakness was disclosed 05/27/2003 as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability was named CVE-2003-0259 since 05/07/2003. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 11594 (Cisco VPN 3000 Series Multiple Vulnerabilities (CSCdea77143, CSCdz15393, CSCdt84906)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (11955) and Tenable (11594). The entries 20451 and 20453 are pretty similar.

Productinfo

Type

Network Encryption Software

Vendor

Cisco

Name

VPN 30xx Concentrator

Version

License

commercial

Support

end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 11594
Nessus Name: Cisco VPN 3000 Series Multiple Vulnerabilities (CSCdea77143, CSCdz15393, CSCdt84906)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/07/2003 🔍
05/07/2003 +0 days 🔍
05/07/2003 +0 days 🔍
05/07/2003 +0 days 🔍
05/27/2003 +20 days 🔍
05/27/2003 +0 days 🔍
03/08/2004 +286 days 🔍
08/11/2014 +3808 days 🔍
05/20/2019 +1743 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: kb.cert.org
Status: Confirmed

CVE: CVE-2003-0259 (🔍)
X-Force: 11955 - Cisco VPN 3000 series concentrators malformed SSH packet denial of service
Vulnerability Center: 3932 - [cisco-sa-20030507-vpn3k] Cisco VPN 3000 Series Concentrators and Cisco VPN 3002 Hardware Client DoS, Medium
SecurityFocus: 7522 - Cisco VPN Concentrator Malformed SSH Initialization Packet Denial Of Service Vulnerability

See also: 🔍

Entryinfo

Created: 08/12/2014 00:36
Updated: 05/20/2019 12:47
Changes: 08/12/2014 00:36 (67), 05/20/2019 12:47 (2)
Complete: 🔍