Cisco IOS XE Express Forwarding Processing MPLS Packet IP Header input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE. It has been declared as problematic. This affects an unknown part of the component Express Forwarding Processing Module. Executing a manipulation as part of MPLS Packet IP Header can lead to input validation. This vulnerability is tracked as CVE-2013-6706. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS XE (Router Operating System) (version now known). This vulnerability affects some unknown processing of the component Express Forwarding Processing Module. The manipulation as part of a MPLS Packet IP Header leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

The Cisco Express Forwarding processing module in Cisco IOS XE allows remote attackers to cause a denial of service (device reload) via crafted MPLS packets that are not properly handled during IP header validation, aka Bug ID CSCuj23992.

The weakness was disclosed 11/27/2013 with Cisco as CSCuj23992 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2013-6706 since 11/07/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 78691 (Cisco IOS XE IP Header Sanity Check DoS (CSCuj23992)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at tools.cisco.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (78691), SecurityFocus (BID 63979†), OSVDB (100394†), Secunia (SA55817†) and Vulnerability Center (SBV-42423†). 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: 7.2

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 78691
Nessus Name: Cisco IOS XE IP Header Sanity Check DoS (CSCuj23992)
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: 🔍

Upgrade: tools.cisco.com

Timelineinfo

11/07/2013 🔍
11/27/2013 +20 days 🔍
11/27/2013 +0 days 🔍
11/27/2013 +0 days 🔍
11/27/2013 +0 days 🔍
11/28/2013 +1 days 🔍
11/28/2013 +0 days 🔍
12/02/2013 +4 days 🔍
12/02/2013 +0 days 🔍
10/27/2014 +329 days 🔍
06/02/2021 +2410 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuj23992
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-6706 (🔍)
GCVE (CVE): GCVE-0-2013-6706
GCVE (VulDB): GCVE-100-11332
SecurityFocus: 63979 - Cisco IOS XE Software MPLS Packet Handling Denial of Service Vulnerability
Secunia: 55817 - Cisco IOS XE IP Header Sanity Check Denial of Service Vulnerability, Less Critical
OSVDB: 100394
SecurityTracker: 1029407
Vulnerability Center: 42423 - Cisco IOS XE Remote DoS Vulnerability via Crafted MPLS Packets, Medium

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

Entryinfo

Created: 12/02/2013 12:20
Updated: 06/02/2021 15:00
Changes: 12/02/2013 12:20 (75), 05/16/2017 04:27 (1), 06/02/2021 14:58 (3), 06/02/2021 15:00 (1)
Complete: 🔍
Cache ID: 216:94F:103

Once again VulDB remains the best source for vulnerability data.

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