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.
6.5	$0-$5k	0.00

A vulnerability was found in Cisco CatOS up to 5.5.4a. It has been rated as critical. This issue affects an unknown functionality of the component Telnet Authentication. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote attackers to cause a denial of service via a series of failed telnet authentication attempts.

The weakness was released 12/06/2000 with Cisco (Website). It is possible to read the advisory at cisco.com. The identification of this vulnerability is CVE-2001-0041. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Perl. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 10978 (Cisco Catalyst Telnetd Authentication Failure Saturation Memory Leak Remote DoS (CSCds66191)), 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.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5656) and Tenable (10978). Entries connected to this vulnerability are available at 503, 15495, 16074 and 16156.

Productinfo

Vendor

• Cisco

Name

• CatOS

Version

• 5.5.4a

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: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 10978
Nessus Name: Cisco Catalyst Telnetd Authentication Failure Saturation Memory Leak Remote DoS (CSCds66191)
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: 🔍

Timelineinfo

12/06/2000 🔍
12/06/2000 +0 days 🔍
12/06/2000 +0 days 🔍
02/16/2001 +72 days 🔍
06/05/2002 +474 days 🔍
09/12/2002 +99 days 🔍
09/09/2003 +361 days 🔍
07/03/2014 +3950 days 🔍
05/12/2019 +1774 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Organization: Cisco
Status: Confirmed

CVE: CVE-2001-0041 (🔍)
X-Force: 5656 - Cisco Catalyst telnet server memory leak denial of service
Vulnerability Center: 2062 - [cisco-sa-20001206-catalyst-memleak] DoS in Cisco Catalyst 4000, 5000 and 6000 Series Switches, High
SecurityFocus: 2072 - Cisco Catalyst Memory Leak Denial of Service Vulnerability
OSVDB: 801 - Cisco Catalyst Telnetd Authentication Failure Saturation Memory Leak Remote DoS

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

Entryinfo

Created: 07/03/2014 12:03
Updated: 05/12/2019 20:28
Changes: 07/03/2014 12:03 (75), 05/12/2019 20:28 (1)
Complete: 🔍

Discussion

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