CVE-2019-3871 Server-side request forgery in pdns

What is CVE-2019-3871?

CVE-2019-3871 is a medium-severity server-side request forgery vulnerability in Fedoraproject Fedora, published on 21 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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

Weakness: CWE-20

Which versions are affected by CVE-2019-3871?

It affects 2 products.

Products include Fedoraproject Fedora, Powerdns Authoritative Server.

How do I fix CVE-2019-3871?

Upgrade to a fixed version.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2019-3871 being exploited?

There is no known exploitation of CVE-2019-3871 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

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• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-3871, DLA-1737-1, DSA-4424-1, GHSA-mg3r-wf83-7hqh, MGASA-2019-0122, UBUNTU-CVE-2019-3871 and 1 more.