CVE-2017-3881

Scores

EPSS

0.943high94.3%
0%20%40%60%80%100%

Percentile: 94.3%

CVSS

9.8critical3.x
0246810

CVSS Score: 9.8/10

All CVSS Scores

CVSS 3.x
9.8

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

CVSS 2.0
10.0

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

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 23 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 23 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893.

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Sources

nvd

CWEs

CWE-20

Related Vulnerabilities

Exploits

Exploit ID: CVE-2017-3881

Source: cisa

URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Exploit ID: 41872

Source: exploitdb

URL: https://www.exploit-db.com/exploits/41872

Exploit ID: 42122

Source: exploitdb

URL: https://www.exploit-db.com/exploits/42122

Vulnerable Software (2)

Type: Configuration

Vendor: *

Product: ios

Operating System: * * *

Trait:
{  "children": [    {      "cpe_match": [        {          "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",          "versionEndIncluding": "15.1\\(3\\)svs",          "versionStartIncluding"...

Source: nvd

Type: Configuration

Vendor: *

Product: ios_xe

Operating System: * * *

Trait:
{  "children": [    {      "cpe_match": [        {          "cpe23uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",          "versionEndIncluding": "15.1\\(3\\)svs",          "versionStartIncluding"...

Source: nvd

End of list