CVE-2015-7979

Description

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (client-server association tear down) by sending broadcast packets with invalid authentication to a broadcast client.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 18.76% Top 10%
Vendor Advisory cisco.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory FreeBSD.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3096-1 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html third party advisory vendor advisory
http://www.debian.org/security/2016/dsa-3629 third party advisory vendor advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
https://access.redhat.com/errata/RHSA-2016:1141 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html third party advisory vendor advisory
http://www.securitytracker.com/id/1034782 vdb entry third party advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html third party advisory vendor advisory
https://www.kb.cert.org/vuls/id/718152 third party advisory us government resource
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-1552.html third party advisory vendor advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176434.html third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.html vendor advisory
https://security.netapp.com/advisory/ntap-20171031-0001/
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html third party advisory vendor advisory
http://www.securityfocus.com/bid/81816 vdb entry third party advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html third party advisory vendor advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc vendor advisory
https://bto.bluecoat.com/security-advisory/sa113 third party advisory
http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html third party advisory vendor advisory
https://security.gentoo.org/glsa/201607-15 third party advisory vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11

Frequently Asked Questions

What is the severity of CVE-2015-7979?
CVE-2015-7979 has been scored as a high severity vulnerability.
How to fix CVE-2015-7979?
To fix CVE-2015-7979, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-7979 being actively exploited in the wild?
It is possible that CVE-2015-7979 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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