PT-2018-3807 · Cisco · Cisco Ios+1

Published 2018-03-28 · Updated 2025-01-27 · CVE-2018-0172

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

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

Description A vulnerability in the DHCP option 82 encapsulation functionality could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The issue exists due to incomplete input validation of option 82 information received in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this by sending a crafted DHCPv4 packet to an affected device, potentially causing a heap overflow condition that leads to a device reload and DoS condition.

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

DoS

Memory Corruption

RCE

Weakness Enumeration

CWE-787

CWE-20

Related Identifiers

BDU:2022-04740

CVE-2018-0172

Affected Products

Cisco Ios

Cisco Ios Xe

References · 12

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-04740 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-0172 · Security Note
• https://tenable.com/security/research/tra-2018-06 · Note
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 · Note
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 · Note
• https://cisa.gov/known-exploited-vulnerabilities-catalog · Note
• http://securitytracker.com/id/1040591 · Note
• https://t.me/cvenotify/108751 · Telegram Post
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note
• http://securityfocus.com/bid/103552 · Note