The ntpq protocol in NTP before 4.2.8p7 allows remote attackers to conduct replay attacks by sniffing the network.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-8140 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 5.4 |
---|---|
Base Metrics | AV:A/AC:M/Au:N/C:P/I:P/A:P |
Access Vector | Adjacent Network |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Partial |
Integrity Impact | Partial |
Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat Enterprise Linux 7 | ntp | Will not fix |
Red Hat Enterprise Linux 6 | ntp | Will not fix |
Red Hat Enterprise Linux 5 | ntp | Will not fix |
This issue can be mitigated by one of the following methods: disabling ntpq in ntp.conf, configuring ntpd to get time from multiple sources, or using a restriction list in your ntp.conf to limit who is allowed to issue ntpq queries.