PT-2018-3806 · Cisco · Cisco Ios+1

Published 2018-03-28 · Updated 2025-10-28 · CVE-2018-0174

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS Software and Cisco IOS XE Software (affected versions not specified)

Description A vulnerability exists in the DHCP option 82 encapsulation functionality due to incomplete input validation of option 82 information received in DHCP Version 4 packets from DHCP relay agents. This could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service condition. The attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2022-04738

CVE-2018-0174

Affected Products

Cisco Ios

Cisco Ios Xe

References · 15

• https://bdu.fstec.ru/vul/2022-04738 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0174 · Security Note
• https://osv.dev/vulnerability/CVE-2018-0174 · Vendor Advisory
• https://cisco.com/c/en/us/support/docs/csa/cisco-sa-20180328-dhcpr3.html · Vendor Advisory
• https://t.me/cveNotify/140650 · Telegram Post
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 · Note
• https://t.me/cvenotify/108768 · Telegram Post
• https://tenable.com/security/research/tra-2018-06 · Note
• http://securityfocus.com/bid/103554 · Note
• https://cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0174 · Note
• https://cisa.gov/known-exploited-vulnerabilities-catalog · Note
• http://securitytracker.com/id/1040591 · Note
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 · Note
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note