Cisco IOx for IOS Software Guest Operating System Unauthorized Access Vulnerability (cisco-sa-20190925-ios-gos-auth)

high Nessus Plugin ID 129713

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, IOS is affected by a vulnerability in the IOx application environment. This is due to incorrect role-based access control evaluation when a low-privileged user request access to a Guest OS that should be restricted to administrative accounts. An attacker can exploit this vulnerability by authenticating to the Guest OS using the low-privileged user credentials in order to gain unauthorized access to the GuestOS as a root user.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvm86480

Plugin Details

Severity: High

ID: 129713

File Name: cisco-sa-20190925-ios-gos-auth.nasl

Version: 1.11

Type: combined

Family: CISCO

Published: 10/8/2019

Updated: 4/28/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2019-12648

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version, Host/Cisco/IOS/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 9/25/2019

Vulnerability Publication Date: 9/25/2019

Reference Information

CVE: CVE-2019-12648

CWE: 284

CISCO-SA: cisco-sa-20190925-ios-gos-auth

CISCO-BUG-ID: CSCvm86480

Detections

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