Cisco IOS Cluster Management Protocol Telnet Option Handling RCE (cisco-sa-20170317-cmp)
critical Nessus Plugin ID 97991
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version and configuration, the Cisco IOS software running on 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
Plugin Details
Severity: Critical
ID: 97991
File Name: cisco-sa-20170317-cmp-ios.nasl
Version: 1.13
Type: combined
Family: CISCO
Published: 3/27/2017
Updated: 4/13/2021
Dependencies: cisco_ios_version.nasl
Risk Information
CVSS Score Source: CVE-2017-3881
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:POC/RL:OF/RC:C
CVSS v3
Risk Factor: Critical
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: E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios
Required KB Items: Host/Cisco/IOS/Version
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/17/2017
Vulnerability Publication Date: 3/17/2017
Reference Information
CVE: CVE-2017-3881
BID: 96960