CVE-2016-1550: Infoleak
An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.
Other sources
The follwing flaw was found in NTP:
An exploitable vulnerability exists in the message authentication functionality of Network Time Protocol libntp. An attacker can send a series of crafted messages to attempt to recover the message digest key.
Upstream bugs:
http://support.ntp.org/bin/view/Main/NtpBug2879
External References:
http://support.ntp.org/bin/view/Main/SecurityNotice#April2016NTP428p7Security http://www.talosintel.com/reports/TALOS-2016-0084/
— Red Hat
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2016-1550?
CVE-2016-1550 has been classified as a high-severity vulnerability due to its potential for message authentication exploitation.
How do I fix CVE-2016-1550?
To fix CVE-2016-1550, update to the patched versions of the ntp package: 1:4.2.8p12+dfsg-4 or 1:4.2.8p15+dfsg-1 for Debian and 4.2.8 for Red Hat.
What products are affected by CVE-2016-1550?
CVE-2016-1550 affects multiple products including NTP 4.2.8p4, Siemens TIM 4R-IE, and SIMATIC NET CP 443-1 OPC UA.
Can an attacker exploit CVE-2016-1550 remotely?
Yes, an attacker can exploit CVE-2016-1550 remotely by sending crafted messages to the vulnerable NTP implementations.
What are the potential impacts of exploiting CVE-2016-1550?
Exploiting CVE-2016-1550 may allow an attacker to recover the message digest key, compromising the integrity of the NTP service.