A denial of service flaw was found in the way dhcpd handled reference counting when processing client requests. A malicious DHCP client could use this flaw to trigger a reference count overflow on the server side, potentially causing dhcpd to crash, by sending large amounts of traffic.
Find out more about CVE-2018-5733 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 5.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (dhcp) | RHSA-2018:0483 | 2018-03-12 |
| Red Hat Enterprise Linux 6 (dhcp) | RHSA-2018:0469 | 2018-03-09 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | dhcp | Will not fix |
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