Resource exhaustion in DHCP - CVE-2017-3144
Published: January 17, 2018
Vulnerability identifier: #VU10031
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-3144
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ISC
Affected software:
DHCP
DHCP
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to improper cleaning up of closed OMAPI connections. A remote attacker who is permitted to establish connections to the OMAPI control port can trigger exhaustion of the pool of socket descriptors available to the DHCP server and cause the service to crash.
The weakness exists due to improper cleaning up of closed OMAPI connections. A remote attacker who is permitted to establish connections to the OMAPI control port can trigger exhaustion of the pool of socket descriptors available to the DHCP server and cause the service to crash.
How to mitigate CVE-2017-3144
The recommended remedy is to disallow access to the OMAPI control port from unauthorized clients (in accordance with best practices for server operation).