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CVE-2018-7170

Date: March 6, 2018

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.

Language: Unix

Severity Score

Related Resources (15)

https://security.gentoo.org/glsa/201805-12
https://nvd.nist.gov/vuln/detail/CVE-2018-7170
https://security.netapp.com/advisory/ntap-20180626-0001/
http://www.securityfocus.com/archive/1/541824/100/0/threaded
https://www.synology.com/support/security/Synology_SA_18_13
http://www.securityfocus.com/bid/103194
https://bugzilla.redhat.com/show_bug.cgi?id=1550214
https://access.redhat.com/security/cve/CVE-2018-7170
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7170
https://security-tracker.debian.org/tracker/CVE-2018-7170
http://support.ntp.org/bin/view/Main/NtpBug3415
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://www.mend.io/vulnerability-database/CVE-2018-7170

Severity Score

Weakness Type (CWE)

Data Handling

CWE-19

Key Management Errors

CWE-320

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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