High severity · published Mar 6, 2018
CVE-2018-7184
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…
7.5
CVSS
8.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.6% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DM
Diskstation Manager · Synology
5.2; 6.0; 6.1 · source: NVD
NT
Ntp · Ntp
4.2.8; 4.2.8; 4.2.8; 4.2.8; 4.2.8; 4.2.8; +1 more · source: NVD
RM
Router Manager · Synology
1.1 · source: NVD
SK
Skynas · Synology
All versions, or not specified · source: NVD
SL
Slackware Linux · Slackware
14.0; 14.1; 14.2 · source: NVD
SC
Steelstore Cloud Integrated Storage · Netapp
All versions, or not specified · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 17.10; 18.04 · source: NVD
VD
Virtual Diskstation Manager · Synology
All versions, or not specified · source: NVD
VF
Vs960hd Firmware · Synology
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7184
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7184
Third Party Advisory
http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3453
Third Party Advisory
http://www.securityfocus.com/archive/1/541824/100/0/threaded
Third Party Advisory
http://www.securityfocus.com/bid/103192
Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
Third Party Advisory
https://security.gentoo.org/glsa/201805-12
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