CVE-2017-3144
Published: 31 December 2017
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | DoS over OMAPI port only, see ISC kb article for workarounds, or properly limit access to ports |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
isc-dhcp Launchpad, Ubuntu, Debian |
artful |
Released
(4.3.5-3ubuntu2.2)
|
| bionic |
Released
(4.3.5-3ubuntu5)
|
|
| cosmic |
Released
(4.3.5-3ubuntu5)
|
|
| disco |
Released
(4.3.5-3ubuntu5)
|
|
| eoan |
Released
(4.3.5-3ubuntu5)
|
|
| focal |
Released
(4.3.5-3ubuntu5)
|
|
| groovy |
Released
(4.3.5-3ubuntu5)
|
|
| hirsute |
Released
(4.3.5-3ubuntu5)
|
|
| trusty |
Released
(4.2.4-7ubuntu12.12)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(4.3.3-5ubuntu12.9)
|
|
|
Patches: upstream: https://source.isc.org/cgi-bin/gitweb.cgi?p=dhcp.git;a=commit;h=1a6b62fe17a42b00fa234d06b6dfde3d03451894 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |