4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.5%
The remote host is affected by the vulnerability described in GLSA-202012-18 (PowerDNS: information disclosure)
It was discovered that PowerDNS did not properly handle certain unknown records.
Impact :
An authorized attacker with the ability to insert crafted records into a zone might be able to leak the content of uninitialized memory. Crafted records cannot be inserted via AXFR.
Workaround :
Do not take zone data from untrusted users.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202012-18.
#
# The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('compat.inc');
if (description)
{
script_id(144588);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/31");
script_cve_id("CVE-2020-17482");
script_xref(name:"GLSA", value:"202012-18");
script_name(english:"GLSA-202012-18 : PowerDNS: information disclosure");
script_set_attribute(attribute:"synopsis", value:
"The remote Gentoo host is missing one or more security-related
patches.");
script_set_attribute(attribute:"description", value:
"The remote host is affected by the vulnerability described in GLSA-202012-18
(PowerDNS: information disclosure)
It was discovered that PowerDNS did not properly handle certain unknown
records.
Impact :
An authorized attacker with the ability to insert crafted records into a
zone might be able to leak the content of uninitialized memory. Crafted
records cannot be inserted via AXFR.
Workaround :
Do not take zone data from untrusted users.");
# https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-05.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8474d3f8");
script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/202012-18");
script_set_attribute(attribute:"solution", value:
"All PowerDNS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-dns/pdns-4.3.1'");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N");
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:L/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-17482");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/02");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:pdns");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Gentoo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (qpkg_check(package:"net-dns/pdns", unaffected:make_list("ge 4.3.1"), vulnerable:make_list("lt 4.3.1"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "PowerDNS");
}
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.5%