CVE-2015-7705

Description

The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 36.49% Top 5%
Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory cisco.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ntp.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html vendor advisory
https://www.kb.cert.org/vuls/id/718152 third party advisory us government resource
http://www.ubuntu.com/usn/USN-2783-1 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html vendor advisory
http://www.securityfocus.com/bid/77284 vdb entry third party advisory
https://support.citrix.com/article/CTX220112 third party advisory
http://www.securitytracker.com/id/1033951 vdb entry third party advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit release notes vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html vendor advisory
https://www.cs.bu.edu/~goldbe/NTPattack.html not applicable
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html vendor advisory
https://eprint.iacr.org/2015/1020.pdf technical description
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839 vdb entry third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1274184 issue tracking vdb entry third party advisory
http://support.ntp.org/bin/view/Main/NtpBug2901 vendor advisory
http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html vendor advisory
https://security.gentoo.org/glsa/201607-15 vdb entry third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20171004-0001/ third party advisory
http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html vendor advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html vendor advisory
https://bto.bluecoat.com/security-advisory/sa103
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html vendor advisory
http://www.securityfocus.com/archive/1/536796/100/0/threaded mailing list
http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded mailing list
http://www.securityfocus.com/archive/1/536737/100/0/threaded mailing list
http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded mailing list
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 third party advisory us government resource
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
https://www.arista.com/en/support/advisories-notices/security-advisories/1212-security-advisory-0016

Frequently Asked Questions

What is the severity of CVE-2015-7705?
CVE-2015-7705 has been scored as a critical severity vulnerability.
How to fix CVE-2015-7705?
To fix CVE-2015-7705, 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-2015-7705 being actively exploited in the wild?
It is possible that CVE-2015-7705 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~36% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.