Security features bypass - CVE-2016-1567
Published: January 26, 2016 / Updated: August 3, 2020
Vulnerability identifier: #VU33078
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-1567
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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."
Affected software
chrony (Alpine package)
curl (Alpine package)
chrony
Fedora
curl (Alpine package)
chrony
Fedora
How to mitigate CVE-2016-1567
Install update from vendor's website.
chrony (Alpine package) - update to 2.2.1-r0
curl (Alpine package) - update to 7.47.0-r0
chrony - addressed in versions 2.1.1-2.fc22, 2.1.1-2.fc23
curl (Alpine package) - update to 7.47.0-r0
chrony - addressed in versions 2.1.1-2.fc22, 2.1.1-2.fc23
External References
- http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html
- http://www.talosintel.com/reports/TALOS-2016-0071/