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CVE-2017-3881

A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an...

Basic Information

CVE State
PUBLISHED
Reserved Date
December 21, 2016
Published Date
March 17, 2017
Last Updated
November 15, 2024
Vendor
n/a
Product
Cisco IOS and IOS XE Software
Description
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: (1) the failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device; and (2) the incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. This affects Catalyst switches, Embedded Service 2020 switches, Enhanced Layer 2 EtherSwitch Service Module, Enhanced Layer 2/3 EtherSwitch Service Module, Gigabit Ethernet Switch Module (CGESM) for HP, IE Industrial Ethernet switches, ME 4924-10GE switch, RF Gateway 10, and SM-X Layer 2/3 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893.

CVSS Scores

CVSS v3.1

9.8 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (added 2022-03-25 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2017-05-02 23:21:53 UTC) Source

References

https://www.exploit-db.com/exploits/41872/ https://www.exploit-db.com/exploits/41874/ http://www.securityfocus.com/bid/97391 http://www.securityfocus.com/bid/96960 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170317-cmp http://www.securitytracker.com/id/1038059

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-25 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2017/CVE-2017-3881.yaml 2025-04-26 00:00:00 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

1337g/CVE-2017-3881

Type: github • Created: 2018-01-02 01:45:15 UTC • Stars: 2

credit to artkond

mzakyz666/PoC-CVE-2017-3881

Type: github • Created: 2017-05-11 12:11:51 UTC • Stars: 1

Cisco Catalyst Remote Code Execution PoC

homjxi0e/CVE-2017-3881-Cisco

Type: github • Created: 2017-05-02 23:21:53 UTC • Stars: 0

homjxi0e/CVE-2017-3881-exploit-cisco-

Type: github • Created: 2017-04-20 00:52:10 UTC • Stars: 2