Cisco IOS XR up to 5.3.2 OSPF LSA Opaque Area Update resource management

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.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Cisco IOS XR up to 5.3.2. This affects an unknown part of the component OSPF LSA Opaque Area Update Handler. The manipulation as part of Update leads to resource management. This vulnerability is uniquely identified as CVE-2015-6432. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability was found in Cisco IOS XR up to 5.3.2 (Router Operating System). It has been rated as critical. Affected by this issue is some unknown functionality of the component OSPF LSA Opaque Area Update Handler. The manipulation as part of a Update leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

Cisco IOS XR 4.2.0, 4.3.0, 5.0.0, 5.1.0, 5.2.0, 5.2.2, 5.2.4, 5.3.0, and 5.3.2 does not properly restrict the number of Path Computation Elements (PCEs) for OSPF LSA opaque area updates, which allows remote attackers to cause a denial of service (device reload) via a crafted update, aka Bug ID CSCuw83486.

The weakness was shared 01/05/2016 as CSCuw83486 as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2015-6432 since 08/17/2015. 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 vulnerability scanner Nessus provides a plugin with the ID 87819 (Cisco IOS XR OSPF Link State Advertisement PCE DoS (cisco-sa-20160104-iosxr)), 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 Tenable (87819), SecurityFocus (BID 79831†) and Vulnerability Center (SBV-55498†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Router Operating System

Vendor

Cisco

Name

IOS XR

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 87819
Nessus Name: Cisco IOS XR OSPF Link State Advertisement PCE DoS (cisco-sa-20160104-iosxr)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XR Software OSPF Link State Advertisement PCE Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2015 🔍
08/17/2015 +225 days 🔍
01/04/2016 +140 days 🔍
01/04/2016 +0 days 🔍
01/05/2016 +1 days 🔍
01/05/2016 +0 days 🔍
01/06/2016 +1 days 🔍
01/08/2016 +2 days 🔍
07/02/2022 +2367 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuw83486
Status: Confirmed

CVE: CVE-2015-6432 (🔍)
GCVE (CVE): GCVE-0-2015-6432
GCVE (VulDB): GCVE-100-80054
SecurityFocus: 79831
SecurityTracker: 1034570
Vulnerability Center: 55498 - [cisco-sa-20160104-iosxr] Cisco IOS XR Remote DoS in OSPF Link State Advertisement (LSA) Handling, Medium

scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 01/05/2016 08:25 AM
Updated: 07/02/2022 08:36 AM
Changes: 01/05/2016 08:25 AM (66), 06/20/2018 08:36 AM (14), 07/02/2022 08:36 AM (3)
Complete: 🔍
Cache ID: 18:EEA:40

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