VDB-17719 · CVE-2001-0861 · XFDB 7536

Cisco IOS up to 12.0 ICMP Unreachable Packet 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.
5.1	$0-$5k	0.00

A vulnerability was found in Cisco IOS up to 12.0 (Router Operating System). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component ICMP Unreachable Packet Handler. 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 12000 with IOS 12.0 and line cards based on Engine 2 and earlier allows remote attackers to cause a denial of service (CPU consumption) by flooding the router with traffic that generates a large number of ICMP Unreachable replies.

The bug was discovered 11/14/2001. The weakness was shared 11/14/2001 by FIRST with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is known as CVE-2001-0861. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 48960 (ICMP Unreachable Vulnerability in Cisco 12000 Series Internet Router - Cisco Systems), 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.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (7536) and Tenable (48960). The entries 17723, 17722, 17721 and 17720 are related to this item.

Productinfo

Type

Router Operating System

Vendor

Cisco

Name

Version

12.0

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: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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
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unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
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NVD Base Score: 🔍

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: 48960
Nessus Name: ICMP Unreachable Vulnerability in Cisco 12000 Series Internet Router - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/14/2001 🔍
11/14/2001 +0 days 🔍
11/14/2001 +0 days 🔍
11/14/2001 +0 days 🔍
12/06/2001 +22 days 🔍
12/06/2001 +0 days 🔍
09/12/2002 +280 days 🔍
12/12/2002 +90 days 🔍
09/01/2010 +2820 days 🔍
07/11/2014 +1409 days 🔍
05/06/2019 +1760 days 🔍

Sourcesinfo

Vendor: cisco.com

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

CVE: CVE-2001-0861 (🔍)
OVAL: 🔍

X-Force: 7536 - Cisco 12000 series router \
Vulnerability Center: 356 - [cisco-sa-20011114-gsr-unreachable] Cisco 12000 Series Internet Router Denial Of Service, Medium
SecurityFocus: 3534 - Cisco 12000 Series Internet Router Denial Of Service Vulnerability
OSVDB: 794 - Cisco 12000 Series Router ICMP Unreachable DoS

See also: 🔍

Entryinfo

Created: 07/11/2014 10:48
Updated: 05/06/2019 14:31
Changes: 07/11/2014 10:48 (75), 05/06/2019 14:31 (2)
Complete: 🔍