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CVE-2015-5470

7.8 · HIGH

The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a…

Published Nov 2, 2015powerdnsCWE-399EPSS 11.28%

Overview

CVE-2015-5470 is a high-severity vulnerability affecting powerdns authoritative. It was published on November 2, 2015 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.

Remediation

Check the references section for vendor advisories and patches from powerdns. Update authoritative to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
powerdnsauthoritative0Affected
powerdnsrecursor0Affected

References

Refwww.openwall.com/lists/oss-security/2015/07/07/6Refwww.openwall.com/lists/oss-security/2015/07/10/8Refdoc.powerdns.com/md/security/powerdns-advisory-2015-01/Refwww.openwall.com/lists/oss-security/2015/07/07/6Refwww.openwall.com/lists/oss-security/2015/07/10/8Refdoc.powerdns.com/md/security/powerdns-advisory-2015-01/

How CyberStrike helps

Frequently asked questions

What is CVE-2015-5470?

CVE-2015-5470 is a high-severity vulnerability affecting powerdns authoritative. It was published on November 2, 2015 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2015-5470?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-5470?

Check the references section for vendor advisories and patches from powerdns. Update authoritative to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-5470?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-5470 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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