Security Features The advisory has been revoked - it doesn't affect any version of package chrony (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1710-CHRONY-622818
- published26 Jan 2016
- disclosed26 Jan 2016
Introduced: 26 Jan 2016
CVE-2016-1567 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:17.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream chrony package and not the chrony package as distributed by Ubuntu.
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."
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-1567
- https://security-tracker.debian.org/tracker/CVE-2016-1567
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html
- http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released
- http://www.talosintel.com/reports/TALOS-2016-0071/