CVE-2017-3144

Failure to properly clean up closed OMAPI connections can exhaust available sockets

Description

A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.

Remediation

Workaround:

  • The recommended remedy is to disallow access to the OMAPI control port from unauthorized clients (in accordance with best practices for server operation).

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 8.32% Top 10%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory isc.org
Affected: ISC ISC DHCP
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:0158 third party advisory vendor advisory
https://www.debian.org/security/2018/dsa-4133 third party advisory vendor advisory
http://www.securityfocus.com/bid/102726 vdb entry third party advisory
http://www.securitytracker.com/id/1040194 vdb entry third party advisory
https://usn.ubuntu.com/3586-1/ third party advisory vendor advisory
https://kb.isc.org/docs/aa-01541 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-3144?
CVE-2017-3144 has been scored as a high severity vulnerability.
How to fix CVE-2017-3144?
As a workaround for remediating 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).
Is CVE-2017-3144 being actively exploited in the wild?
It is possible that CVE-2017-3144 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-3144?
CVE-2017-3144 affects ISC ISC DHCP.
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