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High severity · published Jan 13, 2017
CVE-2016-7426
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial…
7.5
CVSS
12.4%
EPSS
No
On KEV
Description
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)12.4% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux Desktop · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.3; 7.4; 7.6; 7.7 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.3; 7.4; 7.5; 7.6; 7.7 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.3; 7.6; 7.7 · source: NVD
EL
Enterprise Linux Workstation · Redhat
6.0; 7.0 · source: NVD
HP
Hpux-ntp · Hpe
b.11.31 before c.4.2.8.2.0 · source: NVD
NT
Ntp · Ntp
4.2.6 before 4.2.8; 4.3.0 before 4.3.94; 4.2.5; 4.2.5; 4.2.5; 4.2.5; +34 more · source: NVD
UL
Ubuntu Linux · Canonical
12.04 · source: NVD
Affected product
UL
Ubuntu Linux
Canonical
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7426
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-7426
Third Party Advisory
http://nwtime.org/ntp428p9_release/
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0252.html
Issue Tracking
http://support.ntp.org/bin/view/Main/NtpBug3071
Release Notes
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
Third Party Advisory
http://www.securityfocus.com/bid/94451
Third Party Advisory
http://www.securitytracker.com/id/1037354
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