critical
CVE-2015-7705
ntp: denial of service by trigerring rate limiting on NTP server
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat4.3AV:N/AC:M/Au:N/C:N/I:N/A:P
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (medium).
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | ntp | 1:4.2.8p4+dfsg-3 |
| debian 7 | ntp | no fix listed |
| debian 8 | ntp | no fix listed |
| Red Hat | ntp, ntp-doc, ntp-perl and 2 more | no fix listed |
| ubuntu 12.04 | ntp | 1:4.2.6.p3+dfsg-1ubuntu3.6 |
| ubuntu 14.04 | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 |
| ubuntu 14.04-ESM | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 |
| ubuntu 15.04 | ntp | 1:4.2.6.p5+dfsg-3ubuntu6.2 |
| ubuntu 15.10 | ntp | 1:4.2.6.p5+dfsg-3ubuntu8.1 |
Show all 13 entries from 9 sources
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | ntp | 1:4.2.8p4+dfsg-3 |
| debian 7 | ntp | no fix listed |
| debian 8 | ntp | no fix listed |
| Red Hat | ntp | no fix listed |
| Red Hat | ntp-doc | no fix listed |
| Red Hat | ntp-perl | no fix listed |
| Red Hat | ntpdate | no fix listed |
| Red Hat | sntp | no fix listed |
| ubuntu 12.04 | ntp | 1:4.2.6.p3+dfsg-1ubuntu3.6 |
| ubuntu 14.04 | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 |
| ubuntu 14.04-ESM | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 |
| ubuntu 15.04 | ntp | 1:4.2.6.p5+dfsg-3ubuntu6.2 |
| ubuntu 15.10 | ntp | 1:4.2.6.p5+dfsg-3ubuntu8.1 |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
All 42 references
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00093.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html
- http://support.ntp.org/bin/view/Main/NtpBug2901
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp
- http://www.cs.bu.edu/~goldbe/NTPattack.html
- http://www.securityfocus.com/archive/1/536737/100/0/threaded
- http://www.securityfocus.com/archive/1/536796/100/0/threaded
- http://www.securityfocus.com/archive/1/archive/1/536737/100/100/threaded
- http://www.securityfocus.com/archive/1/archive/1/536796/100/100/threaded
- http://www.securityfocus.com/bid/77284
- http://www.securitytracker.com/id/1033951
- http://www.ubuntu.com/usn/USN-2783-1
- https://access.redhat.com/security/cve/CVE-2015-7705
- https://bto.bluecoat.com/security-advisory/sa103
- https://bugzilla.redhat.com/show_bug.cgi?id=1274184
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- https://eprint.iacr.org/2015/1020.pdf
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
- https://nvd.nist.gov/vuln/detail/CVE-2015-7705
- https://security.gentoo.org/glsa/201607-15
- https://security.netapp.com/advisory/ntap-20171004-0001/
- https://support.citrix.com/article/CTX220112
- https://ubuntu.com/security/notices/USN-2783-1
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
- 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
- https://www.cs.bu.edu/~goldbe/NTPattack.html
- https://www.cve.org/CVERecord?id=CVE-2015-7705
- https://www.kb.cert.org/vuls/id/718152