Vulnerability CVE-2018-7184
Published: 2018-03-06

Description:
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Synology -> Diskstation manager 
Synology -> Router manager 
Synology -> Skynas 
Synology -> Virtual diskstation manager 
Synology -> Vs960hd firmware 
Slackware -> Slackware linux 
NTP -> NTP 
Netapp -> Cloud backup 
Netapp -> Steelstore cloud integrated storage 
Canonical -> Ubuntu linux 

 References:
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
http://support.ntp.org/bin/view/Main/NtpBug3453
http://www.securityfocus.com/archive/1/541824/100/0/threaded
http://www.securityfocus.com/bid/103192
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://usn.ubuntu.com/3707-1/
https://www.synology.com/support/security/Synology_SA_18_13
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