CVE-2018-0156

HIGH KEV

Cisco IOS and IOS XE - Unauthenticated Denial of Service via Smart Install Packet

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2018-0156 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added March 3, 2022.

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. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.

References (6)

Core 6
Core References
Third Party Advisory, US Government Resource x_refsource_misc
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040596
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103569
Third Party Advisory, US Government Resource x_refsource_misc
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05

Scores

CVSS v3 7.5
EPSS 0.1553
EPSS Percentile 94.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable yes
Technical Impact partial

Details

CISA KEV 2022-03-03
VulnCheck KEV 2022-03-03
InTheWild.io 2018-04-07
ENISA EUVD EUVD-2018-0979
CWE
CWE-399 CWE-20
Status published
Products (4)
cisco/ios 15.2\(2\)e4
cisco/ios 15.2\(2a\)ja
cisco/ios_xe 15.2\(2\)e4
cisco/ios_xe 15.2\(2a\)ja
Published Mar 28, 2018
KEV Added Mar 03, 2022
Tracked Since Feb 18, 2026