Cisco VPN 3000 Concentrator up to 3.5.2 HTML Login Interface Username/Password denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability has been found in Cisco VPN 3000 Concentrator up to 3.5.2 (Network Encryption Software) and classified as problematic. This vulnerability affects an unknown function of the component HTML Login Interface. The manipulation of the argument Username/Password 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 Concentrator 2.2.x, and 3.x before 3.5.3, allows remote attackers to cause a denial of service (crash) via a long (1) username or (2) password to the HTML login interface.

The bug was discovered 09/03/2002. The weakness was disclosed 10/04/2002 with Cisco (Website). The advisory is shared for download at cisco.com. This vulnerability was named CVE-2002-1100. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 31 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 11293 (Cisco VPN 3000 Concentrator Multiple Vulnerabilities (CSCdx07754, CSCdx24622, CSCdx24632)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO, running in the context r and relying on port 161.

Upgrading to version 3.5.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (10025) and Tenable (11293). The entries 19004, 19005, 19006 and 19007 are pretty similar.

Productinfo

Type

Vendor

Name

Version

License

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: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 11293
Nessus Name: Cisco VPN 3000 Concentrator Multiple Vulnerabilities (CSCdx07754, CSCdx24622, CSCdx24632)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: VPN 3000 Concentrator 3.5.3

Timelineinfo

09/03/2002 🔍
09/03/2002 +0 days 🔍
10/04/2002 +31 days 🔍
10/04/2002 +0 days 🔍
03/01/2003 +148 days 🔍
09/26/2005 +940 days 🔍
07/29/2014 +3228 days 🔍
06/09/2019 +1776 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Not defined

CVE: CVE-2002-1100 (🔍)
X-Force: 10025
Vulnerability Center: 9255 - [cisco-sa-20020903-vpn3k-vulnerability] Cisco VPN 3000 Concentrator DoS via Long Username/Password, High
SecurityFocus: 5617 - Cisco VPN 3000 Series Concentrator Posted User Credential Denial Of Service Vulnerability
OSVDB: 8922 - Cisco - VPN 3000 Series Concentrator - DoS from Long User Credentials

See also: 🔍

Entryinfo

Created: 07/29/2014 18:03
Updated: 06/09/2019 17:32
Changes: 07/29/2014 18:03 (70), 06/09/2019 17:32 (3)
Complete: 🔍

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