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Cisco IOS Software and Cisco IOS XE Software IKE Main Mode Vulnerability

Information

Severity

Severity

Medium

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

4 years ago

Summary

A vulnerability in the Internet Key Exchange (IKE) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to delete established security associations on an affected device. The vulnerability is due to improper handling of rogue IKE Main Mode packets. An attacker could exploit this vulnerability by sending a crafted IKE Main Mode packet to an affected device. An exploit could allow the attacker to cause valid, established IKE security associations on an affected device to drop. Cisco has confirmed the vulnerability in a security notice and released software updates. To exploit this vulnerability, an attacker may need access to trusted, internal networks to send crafted IKE Main Mode packets to a targeted device. This access requirement may reduce the possibility of a successful exploit. Cisco indicates through the CVSS score that functional exploit code exists, however, the code is not known to be publicly available.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

See the referenced vendor advisory for a solution.

Common Vulnerabilities and Exposures (CVE)