Improper input validation in Powerdns Authoritative Server
CVE-2019-3871
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
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.126 (96.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.126 · newest: 0.126 · change: 0.000
Affected products
- Powerdns Authoritative Server
- The Powerdns Project Pdns — versions 4.1.7, 4.0.7
- Fedoraproject Fedora — versions 28, 29
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2019/03/18/4 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.ht… (Vendor Advisory)
- www.securityfocus.com/bid/107491 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/03/msg00039.html (mailing-list)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00022.html (vendor-advisory)
- www.debian.org/security/2019/dsa-4424 (vendor-advisory)
- seclists.org/bugtraq/2019/Apr/8 (mailing-list)
Frequently asked questions
- What is CVE-2019-3871?
- CVE-2019-3871 is a medium-severity vulnerability in Powerdns Authoritative Server, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2019-03-21.
- How severe is CVE-2019-3871?
- Medium severity. CVSS v3 base score is 6.5 out of 10.