CVE-2015-7704
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 10.7%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 10.66% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ntp/ntp · debian/debian linux · netapp/oncommand performance manager · netapp/oncommand unified manager · netapp/clustered data ontap · netapp/data ontap · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation · mcafee/enterprise security manager · citrix/xenserver
- Source
- cve@mitre.org
EPSS 10.7% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://bugs.ntp.org/show_bug.cgi?id=2901Issue Tracking, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1930.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-2520.htmlThird Party Advisory
- http://support.ntp.org/bin/view/Main/NtpBug2901Vendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_SecuritRelease Notes, Vendor Advisory
- http://www.debian.org/security/2015/dsa-3388Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
- http://www.securityfocus.com/bid/77280Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1033951Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1271070Issue Tracking, Third Party Advisory, VDB Entry
- https://eprint.iacr.org/2015/1020.pdfTechnical Description, Third Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839Third Party Advisory, VDB Entry
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284Third Party Advisory
- https://security.gentoo.org/glsa/201607-15Third Party Advisory, VDB Entry
- https://security.netapp.com/advisory/ntap-20171004-0001/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20171004-0002/Third Party Advisory
- https://support.citrix.com/article/CTX220112Third Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/1212-security-advisory-0016
- https://www.cs.bu.edu/~goldbe/NTPattack.htmlThird Party Advisory
- https://www.kb.cert.org/vuls/id/718152Third Party Advisory, US Government Resource
- http://bugs.ntp.org/show_bug.cgi?id=2901Issue Tracking, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1930.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-2520.htmlThird Party Advisory
- http://support.ntp.org/bin/view/Main/NtpBug2901Vendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_SecuritRelease Notes, Vendor Advisory
- http://www.debian.org/security/2015/dsa-3388Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
- http://www.securityfocus.com/bid/77280Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1033951Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1271070Issue Tracking, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.