Cisco IOS 12.1 HSRP resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco IOS 12.1. Impacted is an unknown function of the component HSRP Handler. Performing a manipulation results in resource consumption. This vulnerability is known as CVE-2002-2053. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cisco IOS 12.1 (Router Operating System). This affects an unknown code of the component HSRP Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

The design of the Hot Standby Routing Protocol (HSRP), as implemented on Cisco IOS 12.1, when using IRPAS, allows remote attackers to cause a denial of service (CPU consumption) via a router with the same IP address as the interface on which HSRP is running, which causes a loop.

The bug was discovered 06/05/2002. The weakness was published 12/31/2002 by Andrew (Website). It is possible to read the advisory at archives.neohapsis.com. This vulnerability is uniquely identified as CVE-2002-2053 since 07/14/2005. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 17773 (Cisco IOS Hot Standby Routing Protocol IP Collision Denial of Service), 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.

Applying a patch is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (9283), Tenable (17773), SecurityFocus (BID 4949†), OSVDB (60031†) and Vulnerability Center (SBV-21965†). Similar entry is available at VDB-19694. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17773
Nessus Name: Cisco IOS Hot Standby Routing Protocol IP Collision Denial of Service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/05/2002 🔍
06/05/2002 +0 days 🔍
06/05/2002 +0 days 🔍
06/06/2002 +1 days 🔍
12/31/2002 +208 days 🔍
12/31/2002 +0 days 🔍
07/14/2005 +926 days 🔍
05/11/2009 +1397 days 🔍
01/10/2012 +974 days 🔍
08/05/2014 +938 days 🔍
09/03/2019 +1855 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: archives.neohapsis.com
Researcher: Andrew
Status: Not defined

CVE: CVE-2002-2053 (🔍)
GCVE (CVE): GCVE-0-2002-2053
GCVE (VulDB): GCVE-100-19695
X-Force: 9283
SecurityFocus: 4949 - Cisco Spoofed HSRP Loopback Denial Of Service Vulnerability
OSVDB: 60031 - Cisco - IOS - Denial Of Service via Spoofed HSRP Loopback
Vulnerability Center: 21965 - Cisco IOS 12.1 HSRP Remote DoS Vulnerability, High

See also: 🔍

Entryinfo

Created: 08/05/2014 12:07
Updated: 09/03/2019 10:20
Changes: 08/05/2014 12:07 (68), 09/03/2019 10:20 (5)
Complete: 🔍
Cache ID: 216::103

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