CVE-2018-0171

Published Mar 28, 2018

Last updated 2 months ago

Exploit known CVSS critical 9.8

Overview

Description: A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted Smart Install message to an affected device on TCP port 4786. A successful exploit could allow the attacker to cause a buffer overflow on the affected device, which could have the following impacts: Triggering a reload of the device, Allowing the attacker to execute arbitrary code on the device, Causing an indefinite loop on the affected device that triggers a watchdog crash. Cisco Bug IDs: CSCvg76186.
Source: psirt@cisco.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

CVSS 2.0

Type: Primary
Base score: 10
Impact score: 10
Exploitability score: 10
Vector string: AV:N/AC:L/Au:N/C:C/I:C/A:C

Known exploits

Data from CISA

Vulnerability name: Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability
Exploit added on: Nov 3, 2021
Exploit action due: May 3, 2022
Required action: Apply updates per vendor instructions.

Weaknesses

psirt@cisco.com: CWE-20
nvd@nist.gov: CWE-787

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:cisco:ios:15.2\\(5\\)e:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "F112DE64-0042-4FB9-945D-3107468193E5"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 2.0

Known exploits

Weaknesses

Social media

Configurations

References