Test ID:	1.3.6.1.4.1.25623.1.0.142146
Category:	General
Title:	PowerDNS Authoritative Server RESTful Vulnerability
Summary:	An issue has been found in PowerDNS Authoritative Server when the HTTP remote;backend is used in RESTful mode (without post=1 set), allowing a remote user to cause the HTTP backend to connect;to an attacker-specified host instead of the configured one, via a crafted DNS query. This can be used to cause a;denial of service by preventing the remote backend from getting a response, content spoofing if the attacker can;time its own query so that subsequent queries will use an attacker-controlled HTTP server instead of the;configured one, and possibly information disclosure if the Authoritative Server has access to internal servers.
Description:	Summary: An issue has been found in PowerDNS Authoritative Server when the HTTP remote backend is used in RESTful mode (without post=1 set), allowing a remote user to cause the HTTP backend to connect to an attacker-specified host instead of the configured one, via a crafted DNS query. This can be used to cause a denial of service by preventing the remote backend from getting a response, content spoofing if the attacker can time its own query so that subsequent queries will use an attacker-controlled HTTP server instead of the configured one, and possibly information disclosure if the Authoritative Server has access to internal servers. Affected Software/OS: PowerDNS Authoritative up to and including 4.1.6. Solution: Upgrade to version 4.0.7, 4.1.7 or later. CVSS Score: 6.5 CVSS Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2019-3871 BugTraq ID: 107491 http://www.securityfocus.com/bid/107491 Bugtraq: 20190404 [SECURITY] [DSA 4424-1] pdns security update (Google Search) https://seclists.org/bugtraq/2019/Apr/8 Debian Security Information: DSA-4424 (Google Search) https://www.debian.org/security/2019/dsa-4424 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROFI6OTWF4GKONNSNEDUCW6LVSSEBZNF/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWUHF6MRSQ3YO7UUISGLV7MXCAGBW2VD/ https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.html https://lists.debian.org/debian-lts-announce/2019/03/msg00039.html http://www.openwall.com/lists/oss-security/2019/03/18/4 SuSE Security Announcement: openSUSE-SU-2019:1128 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00022.html
Copyright	Copyright (C) 2019 Greenbone Networks GmbH

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