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CVE-2018-0171

CRITICALCISA KEV

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/28/2018

Last Modified1/14/2026

Sourcekev

Honeypot Sightings0

CISA KEV

VendorCisco

ProductIOS and IOS XE

Vulnerability NameCisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability

KEV Date Added2021-11-03

Remediation Due Date2022-05-03

Ransomware UseUnknown

Affected Products

cisco:ios

Weaknesses (CWE)

CWE-20CWE-787

References

http://www.securityfocus.com/bid/103538(psirt@cisco.com)

http://www.securitytracker.com/id/1040580(psirt@cisco.com)

https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04(psirt@cisco.com)

https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05(psirt@cisco.com)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2(psirt@cisco.com)

https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490(psirt@cisco.com)

http://www.securityfocus.com/bid/103538(af854a3a-2127-422b-91ae-364da2661108)

http://www.securitytracker.com/id/1040580(af854a3a-2127-422b-91ae-364da2661108)

https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04(af854a3a-2127-422b-91ae-364da2661108)

https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05(af854a3a-2127-422b-91ae-364da2661108)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2(af854a3a-2127-422b-91ae-364da2661108)

https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0171(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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