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7.8
CVSSv2

CVE-2016-7068

Published: 11/09/2018 Updated: 09/10/2019
CVSS v2 Base Score: 7.8 | Impact Score: 6.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 695
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
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Vulnerability Summary

An issue has been found in PowerDNS prior to 3.4.11 and 4.0.2, and PowerDNS recursor prior to 3.7.4 and 4.0.4, allowing a remote, unauthenticated malicious user 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.

Vulnerability Trend

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powerdns authoritative

powerdns recursor

debian debian linux 8.0

Vendor Advisories

Debian Security Advisories: DSA-3764-1 pdns -- security update
Multiple vulnerabilities have been discovered in pdns, an authoritative DNS server The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-2120 Mathieu Lafon discovered that pdns does not properly validate records in zones An authorized user can take advantage of this flaw to crash server by inser ...
Arch Linux Issues:
An issue has been found in PowerDNS 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 ...

References

CWE-400https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068https://www.debian.org/security/2017/dsa-3764https://www.debian.org/security/2017/dsa-3763https://nvd.nist.govhttps://www.debian.org/security/./dsa-3764
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2020-4463CVE-2024-29895injectCVE-2023-52689CVE-2024-5049CVE-2024-5051privilege escalationphysicalCVE-2023-52676
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