It was found that NTP's :config command could be used to set the pidfile and driftfile paths without any restrictions. A remote attacker could use this flaw to overwrite a file on the file system with a file containing the pid of the ntpd process (immediately) or the current estimated drift of the system clock (in hourly intervals).
Find out more about CVE-2015-5196 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 4 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (ntp) | RHSA-2016:2583 | 2016-11-03 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | ntp | Will not fix |
| Red Hat Enterprise Linux 5 | ntp | Will not fix |
Disable remote runtime configuration with ntpq or ntpdc. In the default NTP configuration on Red Hat Enterprise Linux, runtime configuration with ntpq or ntpdc is limited to localhost.
Vulmon