Cisco IOS up to 12.4yb denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco IOS up to 12.4yb. The impacted element is an unknown function. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2009-2867. There is no exploit available.

Detailsinfo

A vulnerability was found in Cisco IOS up to 12.4yb (Router Operating System). It has been classified as critical. Affected is an unknown code block. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4T, 12.4XZ, and 12.4YA, when Zone-Based Policy Firewall SIP Inspection is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted SIP transit packet, aka Bug ID CSCsr18691.

The weakness was shared 09/28/2009 with Cisco (Website). The advisory is shared for download at vupen.com. This vulnerability is traded as CVE-2009-2867. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/27/2025).

The vulnerability scanner Nessus provides a plugin with the ID 49043 (Cisco IOS Software Zone-Based Policy Firewall Vulnerability - Cisco Systems), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43165 (Cisco IOS Software Zone-Based Policy Firewall Vulnerability (cisco-sa-20090923-ios-fw)).

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 Tenable (49043), SecurityFocus (BID 36492†) and Vulnerability Center (SBV-23558†). The entries VDB-50249, VDB-50248, VDB-50247 and VDB-50246 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: 49043
Nessus Name: Cisco IOS Software Zone-Based Policy Firewall Vulnerability - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/19/2009 🔍
09/23/2009 +35 days 🔍
09/23/2009 +0 days 🔍
09/24/2009 +1 days 🔍
09/28/2009 +4 days 🔍
09/28/2009 +0 days 🔍
09/01/2010 +338 days 🔍
03/18/2015 +1659 days 🔍
03/27/2025 +3662 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: vupen.com⛔
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2867 (🔍)
GCVE (CVE): GCVE-0-2009-2867
GCVE (VulDB): GCVE-100-50244

OVAL: 🔍

SecurityFocus: 36492 - Cisco IOS Zone-Based Policy Firewall SIP Inspection Denial of Service Vulnerability
Vulnerability Center: 23558 - [cisco-sa-20090923-ios-fw] Cisco IOS Zone-Based Policy Firewall SIP Inspection Remote DoS, High

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 03/27/2025 08:12
Changes: 03/18/2015 15:15 (55), 02/15/2017 09:16 (9), 08/23/2021 09:24 (4), 08/23/2021 09:29 (1), 03/27/2025 08:12 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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