CVE-2018-0151

A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges. The vulnerability is due to incorrect bounds checking of certain values in packets that are destined for UDP port 18999 of an affected device. An attacker could exploit this vulnerability by sending malicious packets to an affected device. When the packets are processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code on the affected device with elevated privileges. The attacker could also leverage this vulnerability to cause the device to reload, causing a temporary DoS condition while the device is reloading. The malicious packets must be destined to and processed by an affected device. Traffic transiting a device will not trigger the vulnerability. Cisco Bug IDs: CSCvf73881.

• CWE-119
• CWE-119

• http://www.securityfocus.com/bid/103540Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040582Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03Third Party Advisory, US Government Resource
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qosMitigation, Vendor Advisory
• http://www.securityfocus.com/bid/103540Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040582Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03Third Party Advisory, US Government Resource
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qosMitigation, Vendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0151US Government Resource

Published

Mar 28, 2018

Last Modified

Jun 17, 2026

Status

Analyzed