Cisco IOS up to 12.2xnd config

CVSS Meta Temp Score
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CTI Interest Score
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5.6$5k-$25k0.00

A vulnerability was found in Cisco IOS up to 12.2xnd (Router Operating System). It has been rated as problematic. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a config vulnerability. Using CWE to declare the problem leads to CWE-16. Impacted is availability. CVE summarizes:

Cisco IOS 12.0(32)S12 through 12.0(32)S13 and 12.0(33)S3 through 12.0(33)S4, 12.0(32)SY8 through 12.0(32)SY9, 12.2(33)SXI1 through 12.2(33)SXI2, 12.2XNC before 12.2(33)XNC2, 12.2XND before 12.2(33)XND1, and 12.4(24)T1; and IOS XE 2.3 through 2.3.1t and 2.4 through 2.4.0; when RFC4893 BGP routing is enabled, allows remote attackers to cause a denial of service (device reload) by using an RFC4271 peer to send a malformed update, aka Bug ID CSCta33973.

The weakness was disclosed 07/30/2009 (Website). The advisory is available at cisco.com. This vulnerability is handled as CVE-2009-2049 since 06/12/2009. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/13/2021). This vulnerability is assigned to T1592.004 by the MITRE ATT&CK project.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 49037 (Cisco IOS Software Border Gateway Protocol 4-Byte Autonomous System Number Vulnerabilities - 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 43161 (Cisco IOS Software Border Gateway Protocol 4-Byte Autonomous System Number Vulnerabilities).

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 X-Force (52135) and Tenable (49037). The entry 49201 is pretty similar.

Productinfo

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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: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.9
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Config
CWE: CWE-16
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 49037
Nessus Name: Cisco IOS Software Border Gateway Protocol 4-Byte Autonomous System Number Vulnerabilities - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/12/2009 🔍
07/29/2009 +47 days 🔍
07/29/2009 +0 days 🔍
07/29/2009 +0 days 🔍
07/30/2009 +1 days 🔍
07/30/2009 +0 days 🔍
07/30/2009 +0 days 🔍
07/30/2009 +0 days 🔍
03/18/2015 +2057 days 🔍
08/13/2021 +2340 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Status: Confirmed

CVE: CVE-2009-2049 (🔍)
OVAL: 🔍

X-Force: 52135
SecurityTracker: 1022619 - Cisco IOS 4-Byte ASN Support Bugs in Processing BGP Updates Let Remote Users Deny Service
Vulnerability Center: 23003 - [cisco-sa-20090729-bgp] Cisco IOS Malformed Border Gateway Protocol Update Remote DoS Vulnerability, High
SecurityFocus: 35860 - Cisco IOS Malformed Border Gateway Protocol Update Denial of Service Vulnerability
Secunia: 36046 - Cisco IOS Border Gateway Protocol Two Denial of Service Vulnerabilities, Moderately Critical
Vupen: ADV-2009-2082

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/13/2021 08:18
Changes: 03/18/2015 15:15 (59), 02/12/2017 13:00 (16), 08/13/2021 08:18 (3)
Complete: 🔍
Cache ID: 3:293:103

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