RADIUS Authentication Bypass (cisco-sa-20050629-aaa)

high Nessus Plugin ID 48986

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

Remote Authentication Dial In User Service (RADIUS) authentication on a device that is running certain versions of Cisco Internetworking Operating System (IOS) and configured with a fallback method to none can be bypassed. Systems that are configured for other authentication methods or that are not configured with a fallback method to none are not affected. Only the systems that are running certain versions of Cisco IOS are affected. Not all configurations using RADIUS and none are vulnerable to this issue. Some configurations using RADIUS, none and an additional method are not affected. Cisco has made free software available to address this vulnerability. There are workarounds available to mitigate the effects of the vulnerability.
The vulnerabilities are documented as the following Cisco Bug ID:
CSCee45312 -- Radius authentication bypass when configured with a none fallback method.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20050629-aaa.

Plugin Details

Severity: High

ID: 48986

File Name: cisco-sa-20050629-aaa.nasl

Version: 1.16

Type: local

Family: CISCO

Published: 9/1/2010

Updated: 12/5/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2005-2105

CVSS v3

Risk Factor: High

Base Score: 7.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Patch Publication Date: 2/13/2013

Vulnerability Publication Date: 6/29/2005

Reference Information

CVE: CVE-2005-2105

CISCO-SA: cisco-sa-20050629-aaa

CISCO-BUG-ID: CSCee45312

Detections

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