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CVE
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CVE-2016-7068Date: (C)2018-09-13   (M)2023-12-22


An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score : 7.8
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 3.6Impact Score: 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: COMPLETE
Integrity: NONE 
Availability: HIGH 
  
Reference:
DSA-3763
DSA-3764
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/

CPE    2
cpe:/o:debian:debian_linux:8.0
cpe:/a:powerdns:recursor
CWE    1
CWE-400
OVAL    8
oval:org.secpod.oval:def:1800885
oval:org.secpod.oval:def:111928
oval:org.secpod.oval:def:111930
oval:org.secpod.oval:def:111944
...

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