CVE-2015-1798 Security feature bypass in n/a
Man-in-the-middle attackers can spoof NTP packets by omitting the MAC field, bypassing symmetric-key authentication checks in the NTP daemon.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-1798?
CVE-2015-1798 is a low-severity vulnerability in Ntp Ntp, published on 8 Apr 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
Weakness: CWE-17
Which versions are affected by CVE-2015-1798?
It affects 1 product.
Products include Ntp Ntp.
How do I fix CVE-2015-1798?
Upgrade to a fixed version.
Is CVE-2015-1798 being exploited?
There is no known exploitation of CVE-2015-1798 in the wild and no public exploit code.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2015-1798, GHSA-cx2f-jc4r-m5vp, UBUNTU-CVE-2015-1798.