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Cisco IOS Software RADIUS Client Denial of Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

6.3

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

3 years ago

Summary

A vulnerability in the RADIUS client feature of Cisco IOS Software could allow an authenticated, remote attacker to cause a reload of the affected device. The vulnerability is due to improper parsing of malformed RADIUS packets returned by a RADIUS server. An attacker could exploit this vulnerability by configuring a RADIUS server with a shared RADIUS secret and returning malformed answers back to a RADIUS client on an affected Cisco device. An exploit could allow the attacker to cause a reload of the affected device. Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available. This advisory is available at the references.

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)