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CVE-2017-3881

Status Candidate

Overview

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.

Related Files

Cisco Catalyst 2960 IOS 12.2(55)SE1 Remote Code Execution
Posted Apr 13, 2017
Authored by Artem Kondratenko

Cisco Catalyst 2960 with IOS version 12.2(55)SE1 ROCEM remote code execution exploit.

tags | exploit, remote, code execution
systems | cisco, ios
advisories | CVE-2017-3881
MD5 | 3a6c0e64cf90f6b40458df2e040554da
Cisco Catalyst 2960 IOS 12.2(55)SE11 Remote Code Execution
Posted Apr 13, 2017
Authored by Artem Kondratenko

Cisco Catalyst 2960 with IOS version 12.2(55)SE11 ROCEM remote code execution exploit.

tags | exploit, remote, code execution
systems | cisco, ios
advisories | CVE-2017-3881
MD5 | 252028a693dd29d6d6ffaef31e0a9c10
Cisco Security Advisory 20170317-cmp
Posted Mar 17, 2017
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - 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: 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 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. Cisco will release software updates that address this vulnerability. There are no workarounds that address this vulnerability.

tags | advisory, remote, arbitrary, local, protocol
systems | cisco, osx
advisories | CVE-2017-3881
MD5 | e95dfb301f191a5ec25fd4391f2377a8
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