Published: 01/07/2020 Updated: 07/11/2023

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

An issue has been found in PowerDNS Recursor prior to 4.3.2 where the ACL applied to the internal web server via `webserver-allow-from` is not properly enforced, allowing a remote malicious user to send HTTP queries to the internal web server, bypassing the restriction. Note that the web server is not enabled by default. Only installations using a non-default value for `webserver` and `webserver-address` are affected. Workarounds are: disable the webserver or set a password or an API key. Additionally, restrict the binding address using the `webserver-address` setting to local addresses only and/or use a firewall to disallow web requests from untrusted sources reaching the webserver listening address.

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powerdns recursor

Debian Bug report logs - #964103 pdns-recursor: CVE-2020-14196: Access restriction bypass Package: src:pdns-recursor; Maintainer for src:pdns-recursor is pdns-recursor packagers <pdns-recursor@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 1 Jul 2020 19:36:01 UTC Severity: imp ...

An issue has been found in PowerDNS Recursor before 432 where the ACL applied to the internal web server via `webserver-allow-from` is not properly enforced, allowing a remote attacker to send HTTP queries to the internal web server, bypassing the restriction Note that the web server is not enabled by default Only installations using a non-defa ...

CWE-863 https://www.openwall.com/lists/oss-security/2020/07/01/1 https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-04.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00043.html http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00044.html http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00042.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7TUNCUZNASYSTVD35QGFAI6XO2BFMQ2F/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964103 https://nvd.nist.gov https://security.archlinux.org/CVE-2020-14196

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CVE-2020-14196

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