CVE-2015-7704

Description

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 52.02% Top 5%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory ntp.org Vendor Advisory ntp.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1271070 third party advisory vdb entry issue tracking
http://rhn.redhat.com/errata/RHSA-2015-1930.html third party advisory vendor advisory
http://www.securityfocus.com/bid/77280 third party advisory vdb entry
https://www.kb.cert.org/vuls/id/718152 third party advisory us government resource
http://bugs.ntp.org/show_bug.cgi?id=2901 vendor advisory issue tracking
https://support.citrix.com/article/CTX220112 third party advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html third party advisory
https://security.netapp.com/advisory/ntap-20171004-0002/ third party advisory
http://www.securitytracker.com/id/1033951 third party advisory vdb entry
http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit release notes vendor advisory
http://www.debian.org/security/2015/dsa-3388 third party advisory vendor advisory
https://www.cs.bu.edu/~goldbe/NTPattack.html third party advisory
https://eprint.iacr.org/2015/1020.pdf third party advisory technical description
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839 third party advisory vdb entry
http://rhn.redhat.com/errata/RHSA-2015-2520.html third party advisory vendor advisory
http://support.ntp.org/bin/view/Main/NtpBug2901 vendor advisory
https://security.gentoo.org/glsa/201607-15 vendor advisory third party advisory vdb entry
https://security.netapp.com/advisory/ntap-20171004-0001/ third party advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10284 third party advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/1212-security-advisory-0016

Frequently Asked Questions

What is the severity of CVE-2015-7704?
CVE-2015-7704 has been scored as a high severity vulnerability.
How to fix CVE-2015-7704?
To fix CVE-2015-7704, 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-2015-7704 being actively exploited in the wild?
It is possible that CVE-2015-7704 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~52% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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