Mend Vulnerability Database

Vulnerability DatabaseCVE-2015-1798

CVE-2015-1798

Published:April 08, 2015

Updated:May 17, 2026

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.

Related Resources (24)

https://people.canonical.com/~ubuntu-security/cve/CVE-2015-1798

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

http://marc.info/?l=bugtraq&m=143213867103400&w=2

https://access.redhat.com/security/cve/CVE-2015-1798

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd

https://security.gentoo.org/glsa/201509-01

http://support.apple.com/kb/HT204942

http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html

https://security-tracker.debian.org/tracker/CVE-2015-1798

https://kc.mcafee.com/corporate/index?page=content&id=SB10114

http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html