CVE-2016-1567

Public Exploit

Description

chrony before 1.31.2 and 2.x before 2.2.1 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.71% Top 30%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory tuxfamily.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.talosintel.com/reports/TALOS-2016-0071/ exploit
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html patch vendor advisory
http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-1567?
CVE-2016-1567 has been scored as a high severity vulnerability.
How to fix CVE-2016-1567?
To fix CVE-2016-1567, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1567 being actively exploited in the wild?
It is possible that CVE-2016-1567 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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