Vulnerability CVE-2016-4957


Published: 2016-07-04   Modified: 2016-07-05

Description:
ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.

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
Oracle -> Solaris 
Opensuse -> LEAP 
Opensuse -> Opensuse 
NTP -> NTP 
Novell -> LEAP 
Novell -> Opensuse 
Novell -> Suse linux enterprise debuginfo 
Novell -> Suse linux enterprise desktop 
Novell -> Suse linux enterprise server 
Novell -> Suse manager 
Novell -> Suse manager proxy 
Novell -> Suse openstack cloud 

 References:
http://bugs.ntp.org/3046
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
http://support.ntp.org/bin/view/Main/NtpBug3046
http://support.ntp.org/bin/view/Main/SecurityNotice
http://www.kb.cert.org/vuls/id/321640
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.securitytracker.com/id/1036037
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
https://security.gentoo.org/glsa/201607-15

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