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CVE-2019-3871

6.5 · MEDIUM

A vulnerability was found in PowerDNS Authoritative Server before 4.0.7 and before 4.1.7.

Published Mar 21, 2019CWE-20EPSS 12.63%

Overview

CVE-2019-3871 is a medium-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability was found in PowerDNS Authoritative Server before 4.0.7 and before 4.1.7. An insufficient validation of data coming from the user when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend, allowing a remote user to cause a denial of service by making the server connect to an invalid endpoint, or possibly information disclosure by making the server connect to an internal endpoint and somehow extracting meaningful information about the response

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

Reflists.opensuse.org/opensuse-security-announce/2019-04/msg00022.htmlRefwww.openwall.com/lists/oss-security/2019/03/18/4Refwww.securityfocus.com/bid/107491Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3871Refdoc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.htmlReflists.debian.org/debian-lts-announce/2019/03/msg00039.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWUHF6MRSQ3YO7UUISGLV7MXCAGBW2VD/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ROFI6OTWF4GKONNSNEDUCW6LVSSEBZNF/Refseclists.org/bugtraq/2019/Apr/8Refwww.debian.org/security/2019/dsa-4424

How CyberStrike helps

Frequently asked questions

What is CVE-2019-3871?

CVE-2019-3871 is a medium-severity vulnerability. It was published on March 21, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

How severe is CVE-2019-3871?

This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-3871?

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-2019-3871?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-3871 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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