Cisco IOS/IOS XE IKEv2 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS and IOS XE and classified as problematic. The impacted element is an unknown function of the component IKEv2 Handler. The manipulation leads to input validation. This vulnerability is documented as CVE-2014-2108. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS and IOS XE (Router Operating System) (the affected version unknown). This issue affects an unknown part of the component IKEv2 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:

Cisco IOS 12.2 and 15.0 through 15.3 and IOS XE 3.2 through 3.7 before 3.7.5S and 3.8 through 3.10 before 3.10.1S allow remote attackers to cause a denial of service (device reload) via a malformed IKEv2 packet, aka Bug ID CSCui88426.

The weakness was released 03/26/2014 with Cisco as cisco-sa-20140326-ikev2 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2014-2108 since 02/25/2014. The exploitation is known to be easy. 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 73340 (Cisco IOS XE Software Internet Key Exchange Version 2 (IKEv2) Denial of Service (cisco-sa-20140326-ikev2)), 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 43380 (Cisco IOS Software Internet Key Exchange Version 2 Denial of Service Vulnerability (cisco-sa-20140326-ikev2)).

Applying the patch cisco-sa-20140326-ikev2 is able to eliminate this problem. The bugfix is ready for download at tools.cisco.com.Addressing this vulnerability is possible by firewalling udp/500, udp/4500. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92054), Tenable (73340), SecurityFocus (BID 66471†), Secunia (SA57631†) and SecurityTracker (ID 1029959†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73340
Nessus Name: Cisco IOS XE Software Internet Key Exchange Version 2 (IKEv2) Denial of Service (cisco-sa-20140326-ikev2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: cisco-sa-20140326-ikev2
Firewalling: 🔍

Timelineinfo

02/25/2014 🔍
03/26/2014 +29 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/27/2014 +1 days 🔍
03/27/2014 +0 days 🔍
03/27/2014 +0 days 🔍
04/04/2014 +8 days 🔍
05/09/2026 +4418 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20140326-ikev2
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-2108 (🔍)
GCVE (CVE): GCVE-0-2014-2108
GCVE (VulDB): GCVE-100-12701

IAVM: 🔍

X-Force: 92054 - Cisco IOS IKEv2 denial of service, High Risk
SecurityFocus: 66471 - Cisco IOS CVE-2014-2108 Denial of Service Vulnerability
Secunia: 57631
SecurityTracker: 1029959 - Cisco IOS IKEv2 Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 43765 - [cisco-sa-20140326-ikev2] Cisco IOS XE Remote DoS Vulnerability via Crafted IKEv2 Packets, High

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

Entryinfo

Created: 03/27/2014 11:58
Updated: 05/09/2026 03:35
Changes: 03/27/2014 11:58 (47), 05/24/2017 10:37 (38), 06/16/2021 09:06 (3), 05/09/2026 03:35 (15)
Complete: 🔍
Cache ID: 216::103

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