4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.089 Low
EPSS
Percentile
94.6%
CentOS Errata and Security Advisory CESA-2018:0855
The Network Time Protocol (NTP) is used to synchronize a computerโs 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
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 7 | x86_64 | ntp | <ย 4.2.6p5-28.el7.centos | ntp-4.2.6p5-28.el7.centos.x86_64.rpm |
CentOS | 7 | x86_64 | ntpdate | <ย 4.2.6p5-28.el7.centos | ntpdate-4.2.6p5-28.el7.centos.x86_64.rpm |
CentOS | 7 | noarch | ntp-doc | <ย 4.2.6p5-28.el7.centos | ntp-doc-4.2.6p5-28.el7.centos.noarch.rpm |
CentOS | 7 | noarch | ntp-perl | <ย 4.2.6p5-28.el7.centos | ntp-perl-4.2.6p5-28.el7.centos.noarch.rpm |
CentOS | 7 | x86_64 | sntp | <ย 4.2.6p5-28.el7.centos | sntp-4.2.6p5-28.el7.centos.x86_64.rpm |
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.089 Low
EPSS
Percentile
94.6%