ntp, ntpdate, sntp security update

CentOS Errata and Security Advisory CESA-2018:0855

The Network Time Protocol (NTP) is used to synchronize a computer’s time with another referenced time source. These packages include the ntpd service which continuously adjusts system time and utilities used to query and configure the ntpd service.

Security Fix(es):

• ntp: Authenticated DoS via Malicious Config Option (CVE-2017-6463)

• ntp: Denial of Service via Malformed Config (CVE-2017-6464)

• ntp: Buffer Overflow in DPTS Clock (CVE-2017-6462)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank the NTP project for reporting these issues. Upstream acknowledges Cure53 as the original reporter of these issues.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2018-April/031268.html

Affected packages:
ntp
ntp-doc
ntp-perl
ntpdate
sntp

Upstream details at:
https://access.redhat.com/errata/RHSA-2018:0855