CVE-2015-7973 Other in n/a

Medium 6.5 Published Updated

Man-in-the-middle attackers can replay NTP packets in broadcast mode to manipulate time synchronization, requiring an upgrade to NTP.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2015-7973?

CVE-2015-7973 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 30 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

Weakness: CWE-254

Which versions are affected by CVE-2015-7973?

It affects 7 products.

Products include Canonical Ubuntu Linux, Freebsd Freebsd, Netapp Clustered Data Ontap, Netapp Oncommand Balance, Ntp Ntp, Siemens Tim 4r-Ie Dnp3 Firmware and 1 more.

How do I fix CVE-2015-7973?

Upgrade to a fixed version.

Is CVE-2015-7973 being exploited?

There is no known exploitation of CVE-2015-7973 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-7973, GHSA-rjg7-f2g5-4qhq, UBUNTU-CVE-2015-7973.

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