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medium6.8

CVE-2014-9751

The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an …

Impact

The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address.

Affected products

VendorProductAffected versions
NtpNtp
from 4.2.0 before 4.2.8
Version 4.2.8
RedhatEnterprise Linux Desktop
Version 6.0
RedhatEnterprise Linux Server
Version 6.0
RedhatEnterprise Linux Workstation
Version 6.0
DebianDebian Linux
Versions 7.0, 8.0, 9.0
OracleLinux
Version 7

Weakness classification

CWE-20

References