Vulnerability CVE-2019-3871
Published: 2019-03-21   Modified: 2019-03-22

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

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Powerdns -> Authoritative server 
Fedoraproject -> Fedora 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00022.html
http://www.openwall.com/lists/oss-security/2019/03/18/4
http://www.securityfocus.com/bid/107491
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3871
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00039.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWUHF6MRSQ3YO7UUISGLV7MXCAGBW2VD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ROFI6OTWF4GKONNSNEDUCW6LVSSEBZNF/
https://seclists.org/bugtraq/2019/Apr/8
https://www.debian.org/security/2019/dsa-4424
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