Medium severity · published Jul 5, 2016
CVE-2016-4956
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet
5.3
CVSS
16.4%
EPSS
No
On KEV
Description
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)16.4% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LE
Leap · Opensuse
42.1 · source: NVD
LE
Linux Enterprise Desktop · Suse
12 · source: NVD
LE
Linux Enterprise Server · Suse
11; 11; 11; 12 · source: NVD
MP
Manager Proxy · Suse
2.1 · source: NVD
NT
Ntp · Ntp
4.2.0 before 4.2.8; 4.3.0 before 4.3.93; 4.2.8; 4.2.8; 4.2.8; 4.2.8; +17 more · source: NVD
OC
Openstack Cloud · Suse
5 · source: NVD
OP
Opensuse · Opensuse
13.2 · source: NVD
SN
Simatic Net CP 443-1 Opc UA Firmware · Siemens
All versions, or not specified · source: NVD
SO
Solaris · Oracle
10; 11.3 · source: NVD
SM
Suse Manager · Novell
2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-4956
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-4956
Issue Tracking
http://bugs.ntp.org/3042
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
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