cisco-sa-cpnr-dhcp-dos-BkEZfhLP: Cisco Prime Network Registrar DHCP Denial of Service Vulnerability
First published: Wed May 20 2020(Updated: )
A vulnerability in the DHCP server of Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of incoming DHCP traffic. An attacker could exploit this vulnerability by sending a crafted DHCP request to an affected device. A successful exploit could allow the attacker to cause a restart of the DHCP server process, causing a DoS condition. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cpnr-dhcp-dos-BkEZfhLP
Credit: This vulnerability was found during the resolution a Cisco TAC support case
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Prime Network Registrar | =10.1<10.1.0.1>=8.3=9.0=9.1<=10.0<10.1.0.1 | 10.1.0.1 10.1.0.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-cpnr-dhcp-dos-BkEZfhLP?
The severity of cisco-sa-cpnr-dhcp-dos-BkEZfhLP is rated as high due to its potential to cause a denial of service.
How do I fix cisco-sa-cpnr-dhcp-dos-BkEZfhLP?
To fix cisco-sa-cpnr-dhcp-dos-BkEZfhLP, update the affected Cisco Prime Network Registrar to a fixed version as specified in the advisory.
Which versions are affected by cisco-sa-cpnr-dhcp-dos-BkEZfhLP?
Cisco Prime Network Registrar versions 8.3, 9.0, 9.1, and 10.0 are affected by cisco-sa-cpnr-dhcp-dos-BkEZfhLP.
Who can exploit cisco-sa-cpnr-dhcp-dos-BkEZfhLP?
cisco-sa-cpnr-dhcp-dos-BkEZfhLP can be exploited by unauthenticated, remote attackers.
What causes the vulnerability cisco-sa-cpnr-dhcp-dos-BkEZfhLP?
The vulnerability cisco-sa-cpnr-dhcp-dos-BkEZfhLP is caused by insufficient input validation of incoming DHCP traffic.
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- agent/severity
- agent/title
- agent/author
- agent/weakness
- agent/references
- agent/remedy
- agent/description
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- collector/cisco-advisory
- source/Cisco
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco prime network registrar
- version/cisco prime network registrar/10.1
- version/cisco prime network registrar/8.3
- version/cisco prime network registrar/9.0
- version/cisco prime network registrar/9.1
- version/cisco prime network registrar/10.0