Vulnerability Details : CVE-2016-4957
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.
Vulnerability category: Denial of service
Products affected by CVE-2016-4957
- cpe:2.3:o:novell:suse_manager:2.1:*:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:*
- cpe:2.3:a:suse:openstack_cloud:5:*:*:*:*:*:*:*
- cpe:2.3:a:suse:manager_proxy:2.1:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.3.92:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-4957
62.95%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-4957
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2016-4957
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-4957
-
http://www.kb.cert.org/vuls/id/321640
VU#321640 - NTP.org ntpd is vulnerable to denial of service and other vulnerabilitiesThird Party Advisory;US Government Resource
-
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
[security-announce] openSUSE-SU-2016:1583-1: important: Security updateMailing List;Third Party Advisory
-
http://support.ntp.org/bin/view/Main/SecurityNotice
SecurityNotice < Main < NTPRelease Notes;Vendor Advisory
-
https://security.gentoo.org/glsa/201607-15
NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo securityThird Party Advisory
-
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
Third Party Advisory
-
http://support.ntp.org/bin/view/Main/NtpBug3046
NtpBug3046 < Main < NTPPatch;Vendor Advisory
-
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Oracle Solaris Bulletin - April 2016Third Party Advisory
-
http://bugs.ntp.org/3046
Bug 3046 – CRYPTO_NAK crashIssue Tracking;Vendor Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
[security-announce] SUSE-SU-2016:1584-1: important: Security update forMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
[security-announce] SUSE-SU-2016:1563-1: important: Security update forMailing List;Third Party Advisory
-
http://www.securitytracker.com/id/1036037
ntp Multiple Bugs Let Remote Users Modify Parameters and Deny Service - SecurityTrackerThird Party Advisory;VDB Entry
-
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
[security-announce] openSUSE-SU-2016:1636-1: important: Security updateMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
[security-announce] SUSE-SU-2016:1602-1: important: Security update forMailing List;Third Party Advisory
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