FreeBSD : powerdns-recursor -- Multiple vulnerabilities (e9aa0e4c-ea8b-11e8-a5b7-00e04c1ea73d)

high Nessus Plugin ID 119021

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

powerdns Team reports :

CVE-2018-10851: An issue has been found in PowerDNS Recursor allowing a malicious authoritative server to cause a memory leak by sending specially crafted records. The issue is due to the fact that some memory is allocated before the parsing and is not always properly released if the record is malformed. When the PowerDNS Recursor is run inside a supervisor like supervisord or systemd, an out-of-memory crash will lead to an automatic restart, limiting the impact to a somewhat degraded service.

CVE-2018-14626: An issue has been found in PowerDNS Recursor allowing a remote user to craft a DNS query that will cause an answer without DNSSEC records to be inserted into the packet cache and be returned to clients asking for DNSSEC records, thus hiding the presence of DNSSEC signatures for a specific qname and qtype. For a DNSSEC-signed domain, this means that clients performing DNSSEC validation by themselves might consider the answer to be bogus until it expires from the packet cache, leading to a denial of service.

CVE-2018-14644: An issue has been found in PowerDNS Recursor where a remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.

Solution

Update the affected packages.

See Also

https://doc.powerdns.com/recursor/changelog/4.1.html

http://www.nessus.org/u?e3064880

Plugin Details

Severity: High

ID: 119021

File Name: freebsd_pkg_e9aa0e4cea8b11e8a5b700e04c1ea73d.nasl

Version: 1.4

Type: local

Published: 11/19/2018

Updated: 4/8/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:powerdns-recursor, p-cpe:/a:freebsd:freebsd:powerdns-recursor40, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 11/17/2018

Vulnerability Publication Date: 11/6/2018

Reference Information

CVE: CVE-2018-10851, CVE-2018-14626, CVE-2018-14644