Cisco IOS up to 15.2 BGP input validation

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.
7.2$0-$5k0.00

A vulnerability was found in Cisco IOS up to 15.2 (Router Operating System). It has been rated as critical. This issue affects an unknown part of the component BGP Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The BGP implementation in Cisco IOS 15.2, IOS XE 3.5.xS before 3.5.2S, and IOS XR 4.1.0 through 4.2.2 allows remote attackers to cause a denial of service (multiple connection resets) by leveraging a peer relationship and sending a malformed attribute, aka Bug IDs CSCtt35379, CSCty58300, CSCtz63248, and CSCtz62914.

The weakness was shared 09/26/2012 as cisco-sa-20120926-bgp as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2012-4617 since 08/24/2012. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 71436 (Cisco IOS XR Software Malformed Border Gateway Protocol Attribute Vulnerability (cisco-sa-20120926-bgp)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

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 (78880) and Tenable (71436). The entries 6570, 6568, 6567 and 6566 are related to this item.

Productinfo

Type

Vendor

Name

Version

License

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: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 71436
Nessus Name: Cisco IOS XR Software Malformed Border Gateway Protocol Attribute Vulnerability (cisco-sa-20120926-bgp)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

08/24/2012 🔍
09/26/2012 +33 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/26/2012 +0 days 🔍
09/27/2012 +1 days 🔍
09/27/2012 +0 days 🔍
09/28/2012 +1 days 🔍
10/01/2012 +3 days 🔍
12/14/2013 +439 days 🔍
04/14/2021 +2678 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20120926-bgp
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-4617 (🔍)
X-Force: 78880
SecurityTracker: 1027576 - Cisco IOS BGP Attribute Processing Bug Lets Remote Users Deny Service
Vulnerability Center: 36258 - [cisco-sa-20120926-bgp] Cisco IOS, IOS-XE, IOS-XR Remote DOS via a Malformed BGP Attribute, High
SecurityFocus: 55694 - Cisco IOS Malformed Attribute Denial of Service Vulnerability
Secunia: 50778 - Cisco IOS Border Gateway Protocol Attribute Handling Denial of Service Vulnerability, Moderately Critical
OSVDB: 85814

See also: 🔍

Entryinfo

Created: 10/01/2012 17:31
Updated: 04/14/2021 14:50
Changes: 10/01/2012 17:31 (71), 04/17/2017 11:27 (11), 04/14/2021 14:50 (3)
Complete: 🔍
Committer:

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!