CVE-2018-0173
Vulnerability from cvelistv5
Published
2018-03-28 22:00
Modified
2024-11-13 18:23
Severity ?
Summary
A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device, which the device would then forward to a DHCPv4 server. When the affected software processes the option 82 information that is encapsulated in the response from the server, an error could occur. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvg62754.
References
ykramarz@cisco.comhttp://www.securityfocus.com/bid/103545Broken Link, Third Party Advisory, VDB Entry
ykramarz@cisco.comhttp://www.securitytracker.com/id/1040591Broken Link, Third Party Advisory, VDB Entry
ykramarz@cisco.comhttps://ics-cert.us-cert.gov/advisories/ICSA-18-107-04Third Party Advisory, US Government Resource
ykramarz@cisco.comhttps://ics-cert.us-cert.gov/advisories/ICSA-18-107-05Third Party Advisory, US Government Resource
ykramarz@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2Vendor Advisory
ykramarz@cisco.comhttps://www.tenable.com/security/research/tra-2018-06Third Party Advisory
Impacted products
n/aCisco IOS and IOS XE
CISA Known exploited vulnerability
Data from the Known Exploited Vulnerabilities Catalog

Date added: 2022-03-03

Due date: 2022-03-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Unknown

Notes: https://nvd.nist.gov/vuln/detail/CVE-2018-0173

Show details on NVD website

To clipboard 

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