Resource exhaustion in Isc Dhcp
CVE-2017-3144
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.727 (99.4th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.727 · newest: 0.727 · change: 0.000
Affected products
- Isc Dhcp — versions 4.1-esv, 4.1.0
- Isc Dhcp — versions 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.
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.4, 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.4, 7.5, 7.6
- Red Hat Enterprise Linux Server Tus — versions 7.4, 7.6
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2018:0158 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4133 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/102726 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1040194 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3586-1/ (vendor-advisory, Third Party Advisory)
- kb.isc.org/docs/aa-01541 (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-3144?
- CVE-2017-3144 is a high-severity vulnerability in Isc Dhcp, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2019-01-16.
- How severe is CVE-2017-3144?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-3144 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.