Vulnerabilities > CVE-2019-3871 - Improper Input Validation vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2019-2FCA900A42.NASL description - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 124484 published 2019-05-02 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124484 title Fedora 30 : pdns (2019-2fca900a42) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-2fca900a42. # include("compat.inc"); if (description) { script_id(124484); script_version("1.3"); script_cvs_date("Date: 2020/01/21"); script_cve_id("CVE-2019-3871"); script_xref(name:"FEDORA", value:"2019-2fca900a42"); script_name(english:"Fedora 30 : pdns (2019-2fca900a42)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2019-2fca900a42" ); script_set_attribute(attribute:"solution", value:"Update the affected pdns package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pdns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:30"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/02"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^30([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 30", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC30", reference:"pdns-4.1.7-1.fc30")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pdns"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4424.NASL description Adam Dobrawy, Frederico Silva and Gregory Brzeski from HyperOne.com discovered that pdns, an authoritative DNS server, did not properly validate user-supplied data when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend. This would allow a remote user to cause either a denial-of-service, or information disclosure. last seen 2020-06-01 modified 2020-06-02 plugin id 123758 published 2019-04-05 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123758 title Debian DSA-4424-1 : pdns - security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-4424. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(123758); script_version("1.2"); script_cvs_date("Date: 2020/01/23"); script_cve_id("CVE-2019-3871"); script_xref(name:"DSA", value:"4424"); script_name(english:"Debian DSA-4424-1 : pdns - security update"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Adam Dobrawy, Frederico Silva and Gregory Brzeski from HyperOne.com discovered that pdns, an authoritative DNS server, did not properly validate user-supplied data when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend. This would allow a remote user to cause either a denial-of-service, or information disclosure." ); script_set_attribute( attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924966" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/pdns" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/stretch/pdns" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2019/dsa-4424" ); script_set_attribute( attribute:"solution", value: "Upgrade the pdns packages. For the stable distribution (stretch), this problem has been fixed in version 4.0.3-1+deb9u4." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/04/04"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/05"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"9.0", prefix:"pdns-backend-bind", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-geoip", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-ldap", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-lua", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-mydns", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-mysql", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-odbc", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-opendbx", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-pgsql", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-pipe", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-remote", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-sqlite3", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-backend-tinydns", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-server", reference:"4.0.3-1+deb9u4")) flag++; if (deb_check(release:"9.0", prefix:"pdns-tools", reference:"4.0.3-1+deb9u4")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_6001CFC69F0F4FAE9B4F9B8FAE001425.NASL description PowerDNS developers report : 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. last seen 2020-06-01 modified 2020-06-02 plugin id 122960 published 2019-03-20 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122960 title FreeBSD : PowerDNS -- Insufficient validation in the HTTP remote backend (6001cfc6-9f0f-4fae-9b4f-9b8fae001425) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2020 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(122960); script_version("1.3"); script_cvs_date("Date: 2020/02/03"); script_cve_id("CVE-2019-3871"); script_name(english:"FreeBSD : PowerDNS -- Insufficient validation in the HTTP remote backend (6001cfc6-9f0f-4fae-9b4f-9b8fae001425)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "PowerDNS developers report : 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." ); # https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?5d136059" ); # https://vuxml.freebsd.org/freebsd/6001cfc6-9f0f-4fae-9b4f-9b8fae001425.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?e53d12c8" ); script_set_attribute(attribute:"solution", value:"Update the affected package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:powerdns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/18"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/20"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"powerdns<4.1.7")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Fedora Local Security Checks NASL id FEDORA_2019-9993D32C48.NASL description - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 123141 published 2019-03-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123141 title Fedora 29 : pdns (2019-9993d32c48) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-9993d32c48. # include("compat.inc"); if (description) { script_id(123141); script_version("1.3"); script_cvs_date("Date: 2020/02/03"); script_cve_id("CVE-2019-3871"); script_xref(name:"FEDORA", value:"2019-9993d32c48"); script_name(english:"Fedora 29 : pdns (2019-9993d32c48)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2019-9993d32c48" ); script_set_attribute(attribute:"solution", value:"Update the affected pdns package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pdns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/27"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^29([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 29", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC29", reference:"pdns-4.1.7-1.fc29")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pdns"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2019-B85D4171D4.NASL description - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 123143 published 2019-03-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123143 title Fedora 28 : pdns (2019-b85d4171d4) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-b85d4171d4. # include("compat.inc"); if (description) { script_id(123143); script_version("1.3"); script_cvs_date("Date: 2020/02/03"); script_cve_id("CVE-2019-3871"); script_xref(name:"FEDORA", value:"2019-b85d4171d4"); script_name(english:"Fedora 28 : pdns (2019-b85d4171d4)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Update to 4.1.7 Release notes: https://doc.powerdns.com/authoritative/changelog/4.1.html#change-4.1.7 Security Advisory: https://doc.powerdns.com/authoritative/security-advisories/powerdns-ad visory-2019-03.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2019-b85d4171d4" ); script_set_attribute(attribute:"solution", value:"Update the affected pdns package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pdns"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/27"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC28", reference:"pdns-4.1.7-1.fc28")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pdns"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-1128.NASL description This update for pdns fixes the following issue : Security issue fixed : - CVE-2019-3871: Fixed an insufficient validation in the HTTP remote backend which could allow a remote user to cause the HTTP backend to connect to an attacker-specified host instead of the configured one (bsc#1129734). last seen 2020-05-31 modified 2019-04-03 plugin id 123670 published 2019-04-03 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123670 title openSUSE Security Update : pdns (openSUSE-2019-1128) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2019-1128. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(123670); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/26"); script_cve_id("CVE-2019-3871"); script_name(english:"openSUSE Security Update : pdns (openSUSE-2019-1128)"); script_summary(english:"Check for the openSUSE-2019-1128 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for pdns fixes the following issue : Security issue fixed : - CVE-2019-3871: Fixed an insufficient validation in the HTTP remote backend which could allow a remote user to cause the HTTP backend to connect to an attacker-specified host instead of the configured one (bsc#1129734)." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1129734" ); script_set_attribute(attribute:"solution", value:"Update the affected pdns packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-geoip"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-geoip-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-godbc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-godbc-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-ldap"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-ldap-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-lua"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-lua-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-mydns"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-mydns-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-mysql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-mysql-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-postgresql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-postgresql-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-remote"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-remote-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-sqlite3"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-backend-sqlite3-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:pdns-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/04/03"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/03"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.0", reference:"pdns-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-geoip-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-geoip-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-godbc-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-godbc-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-ldap-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-ldap-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-lua-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-lua-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-mydns-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-mydns-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-mysql-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-mysql-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-postgresql-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-postgresql-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-remote-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-remote-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-sqlite3-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-backend-sqlite3-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-debuginfo-4.1.2-lp150.3.10.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"pdns-debugsource-4.1.2-lp150.3.10.1") ) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pdns / pdns-backend-geoip / pdns-backend-geoip-debuginfo / etc"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1737.NASL 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. Only installations using the pdns-backend-remote package are affected. For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 123524 published 2019-04-01 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123524 title Debian DLA-1737-1 : pdns security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DLA-1737-1. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(123524); script_version("1.2"); script_cvs_date("Date: 2020/01/27"); script_cve_id("CVE-2019-3871"); script_name(english:"Debian DLA-1737-1 : pdns security update"); script_summary(english:"Checks dpkg output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security update." ); script_set_attribute( attribute:"description", value: "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. Only installations using the pdns-backend-remote package are affected. For Debian 8 'Jessie', this problem has been fixed in version 3.4.1-4+deb8u9. We recommend that you upgrade your pdns packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2019/03/msg00039.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/pdns" ); script_set_attribute(attribute:"solution", value:"Upgrade the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-geo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-ldap"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-lmdb"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-lua"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-mydns"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-mysql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-pgsql"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-pipe"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-remote"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-backend-sqlite3"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-server"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pdns-server-dbg"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/01"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"8.0", prefix:"pdns-backend-geo", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-ldap", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-lmdb", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-lua", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-mydns", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-mysql", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-pgsql", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-pipe", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-remote", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-backend-sqlite3", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-server", reference:"3.4.1-4+deb8u9")) flag++; if (deb_check(release:"8.0", prefix:"pdns-server-dbg", reference:"3.4.1-4+deb8u9")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
References
- https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-03.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3871
- http://www.securityfocus.com/bid/107491
- http://www.openwall.com/lists/oss-security/2019/03/18/4
- https://lists.debian.org/debian-lts-announce/2019/03/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00022.html
- https://www.debian.org/security/2019/dsa-4424
- https://seclists.org/bugtraq/2019/Apr/8
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWUHF6MRSQ3YO7UUISGLV7MXCAGBW2VD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ROFI6OTWF4GKONNSNEDUCW6LVSSEBZNF/