Cisco IOS up to 12.4ya 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, which was classified as problematic, has been found in Cisco IOS. Affected is an unknown function. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2009-2870. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Cisco IOS (Router Operating System). This affects an unknown functionality. 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. The summary by CVE is:

Unspecified vulnerability in Cisco IOS 12.2 through 12.4, when the Cisco Unified Border Element feature is enabled, allows remote attackers to cause a denial of service (device reload) via crafted SIP messages, aka Bug ID CSCsx25880.

The weakness was disclosed 09/28/2009 with Cisco (Website). It is possible to read the advisory at vupen.com. This vulnerability is uniquely identified as CVE-2009-2870. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/27/2025).

The vulnerability scanner Nessus provides a plugin with the ID 49046 (Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability (cisco-sa-20090923-sip)), 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 43169 (Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability(cisco-sa-20090923-sip)).

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 (49046), SecurityFocus (BID 36499†) and Vulnerability Center (SBV-23563†). The entries VDB-50249, VDB-50248, VDB-50246 and VDB-50245 are pretty similar. 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: 7.5
VulDB Meta Temp Score: 7.5

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

CVSSv2info

AVACAuCIA
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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: 49046
Nessus Name: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability (cisco-sa-20090923-sip)
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-2009-2870 (🔍)
GCVE (CVE): GCVE-0-2009-2870
GCVE (VulDB): GCVE-100-50247
SecurityFocus: 36499 - Cisco IOS SIP Message Denial of Service Vulnerability
Vulnerability Center: 23563 - [cisco-sa-20090923-sip] Cisco IOS Remote SIP Denial of Service Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 03/27/2025 08:12
Changes: 03/18/2015 15:15 (54), 02/15/2017 09:17 (9), 08/23/2021 09:44 (4), 08/23/2021 09:47 (1), 03/27/2025 08:12 (16)
Complete: 🔍
Cache ID: 216:AE6:103

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