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Vulnerability Details : CVE-2016-1551

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference clocks are treated like other peers and stored in the same structure, any packet with a source ip address of a reference clock (127.127.1.1 for example) that reaches the receive() function will match that reference clock's peer record and will be treated as a trusted peer. Any system that lacks the typical martian packet filtering which would block these packets is in danger of having its time controlled by an attacker.
Publish Date : 2017-01-27 Last Update Date : 2017-11-20
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- CVSS Scores & Vulnerability Types

CVSS Score
2.6
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 254

- Products Affected By CVE-2016-1551

# Product Type Vendor Product Version Update Edition Language
1 Application NTP NTP 4.2.8 P3 Version Details Vulnerabilities
2 Application Ntpsec Ntpsec A5fb34b9cc89b92a8fef2f459004865c93bb7f92 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
NTP NTP 1
Ntpsec Ntpsec 1

- References For CVE-2016-1551

http://www.talosintelligence.com/reports/TALOS-2016-0132/
http://www.securityfocus.com/bid/88219
BID 88219 NTP CVE-2016-1551 Remote Security Vulnerability Release Date:2016-09-08
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html CONFIRM
https://security.gentoo.org/glsa/201607-15
GENTOO GLSA-201607-15
https://security.netapp.com/advisory/ntap-20171004-0002/ CONFIRM
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc
FREEBSD FreeBSD-SA-16:16
http://www.securitytracker.com/id/1035705
SECTRACK 1035705

- Metasploit Modules Related To CVE-2016-1551

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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