CVE-2018-7170

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

References

http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html

http://support.ntp.org/bin/view/Main/NtpBug3415

http://www.securityfocus.com/archive/1/541824/100/0/threaded

http://www.securityfocus.com/bid/103194

https://bugzilla.redhat.com/show_bug.cgi?id=1550214

https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc

https://security.gentoo.org/glsa/201805-12

https://security.netapp.com/advisory/ntap-20180626-0001/

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us

https://www.synology.com/support/security/Synology_SA_18_13

Details

Source: MITRE

Published: 2018-03-06

Updated: 2020-06-18

Risk Information

CVSS v2

Base Score: 3.5

Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 6.8

Severity: LOW

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 1.6

Severity: MEDIUM

Tenable Plugins

View all (21 total)

IDNameProductFamilySeverity
123357openSUSE Security Update : ntp (openSUSE-2019-856)NessusSuSE Local Security Checks
critical
120864Fedora 28 : ntp (2018-e585e25b72)NessusFedora Local Security Checks
critical
120143SUSE SLES15 Security Update : ntp (SUSE-SU-2018:3386-1)NessusSuSE Local Security Checks
critical
118450openSUSE Security Update : ntp (openSUSE-2018-1280)NessusSuSE Local Security Checks
critical
118445openSUSE Security Update : ntp (openSUSE-2018-1275)NessusSuSE Local Security Checks
critical
118357SUSE SLES11 Security Update : ntp (SUSE-SU-2018:3356-1)NessusSuSE Local Security Checks
critical
118356SUSE SLES11 Security Update : ntp (SUSE-SU-2018:3352-1)NessusSuSE Local Security Checks
critical
118355SUSE SLES12 Security Update : ntp (SUSE-SU-2018:3351-1)NessusSuSE Local Security Checks
critical
118352SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2018:3342-1)NessusSuSE Local Security Checks
critical
118269SUSE SLES12 Security Update : ntp (SUSE-SU-2018:1765-2)NessusSuSE Local Security Checks
critical
117607Amazon Linux AMI : ntp (ALAS-2018-1083)NessusAmazon Linux Local Security Checks
critical
110639SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2018:1765-1)NessusSuSE Local Security Checks
critical
110224SUSE SLES12 Security Update : ntp (SUSE-SU-2018:1464-1)NessusSuSE Local Security Checks
critical
110176GLSA-201805-12 : NTP: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
109697Amazon Linux AMI : ntp (ALAS-2018-1009)NessusAmazon Linux Local Security Checks
critical
109102openSUSE Security Update : ntp (openSUSE-2018-376)NessusSuSE Local Security Checks
critical
109085SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2018:0956-1)NessusSuSE Local Security Checks
critical
108651SUSE SLES11 Security Update : ntp (SUSE-SU-2018:0808-1)NessusSuSE Local Security Checks
critical
107258Network Time Protocol Daemon (ntpd) 4.x < 4.2.8p11 Multiple VulnerabilitiesNessusMisc.
critical
107103Slackware 14.0 / 14.1 / 14.2 / current : ntp (SSA:2018-060-02)NessusSlackware Local Security Checks
high
107046FreeBSD : ntp -- multiple vulnerabilities (af485ef4-1c58-11e8-8477-d05099c0ae8c)NessusFreeBSD Local Security Checks
critical