High severity · published Sep 21, 2016
CVE-2016-5426
PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname
7.5
CVSS
30.6%
EPSS
No
On KEV
Description
PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a long qname.
CVSS vector
CVSS:3.0/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)30.6% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AU
Authoritative · Powerdns
through 3.4.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-5426
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-5426
www.debian.org
http://www.debian.org/security/2016/dsa-3664
Release Notes
http://www.openwall.com/lists/oss-security/2016/09/09/3
www.securityfocus.com
http://www.securityfocus.com/bid/92917
www.securitytracker.com
http://www.securitytracker.com/id/1036761
Vendor Advisory
https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/
Patch
https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
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