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CVE-2017-15120

7.5 · HIGH

An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME o…

Published Jul 27, 2018CWE-476EPSS 51.35%

Overview

CVE-2017-15120 is a high-severity vulnerability. It was published on July 27, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refseclists.org/oss-sec/2017/q4/382Refwww.securityfocus.com/bid/106335Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120Refdoc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.htmlRefwww.debian.org/security/2017/dsa-4063Refseclists.org/oss-sec/2017/q4/382Refwww.securityfocus.com/bid/106335Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120Refdoc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.htmlRefwww.debian.org/security/2017/dsa-4063

How CyberStrike helps

Frequently asked questions

What is CVE-2017-15120?

CVE-2017-15120 is a high-severity vulnerability. It was published on July 27, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2017-15120?

This vulnerability has a CVSS 3.0 base score of 7.5, 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-2017-15120?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2017-15120?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-15120 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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