Cisco IOS Cluster Management Protocol Telnet Option Handling RCE (cisco-sa-20170317-cmp) (destructive check)

Critical Nessus Plugin ID 103783

Synopsis

The remote device is affected by a remote code execution vulnerability.

Description

The remote device is affected by a remote code execution vulnerability in the Cluster Management Protocol (CMP) subsystem due to improper handling of CMP-specific Telnet options. An unauthenticated, remote attacker can exploit this by establishing a Telnet session with malformed CMP-specific telnet options, to execute arbitrary code.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvd48893. Alternatively, as a workaround, disable the Telnet protocol for incoming connections.

See Also

http://www.nessus.org/u?7cb68237

Plugin Details

Severity: Critical

ID: 103783

File Name: cisco-sa-20170317-cmp-dos.nasl

Version: 1.4

Type: remote

Family: CISCO

Published: 2017/10/11

Modified: 2018/07/06

Dependencies: 10280

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/03/17

Vulnerability Publication Date: 2017/03/17

Reference Information

CVE: CVE-2017-3881

BID: 96960

CISCO-BUG-ID: CSCvd48893

IAVA: 2017-A-0073

CISCO-SA: cisco-sa-20170317-cmp