Vulnerability in Tuxfamily Chrony
CVE-2016-1567
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."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (84.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Tuxfamily Chrony — versions 2.0, 2.1, 2.1.1
Weakness classification (CWE)
References
- www.talosintel.com/reports/TALOS-2016-0071/ (Exploit)
- lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html (vendor-advisory, Patch)
- chrony.tuxfamily.org/news.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-1567?
- CVE-2016-1567 is a high-severity vulnerability in Tuxfamily Chrony, classified under CWE-254. CVSS score: 8.1/10. Published 2016-01-26.
- How severe is CVE-2016-1567?
- High severity. CVSS v3 base score is 8.1 out of 10.