ISC BIND versions 9.14.6 / 9.15.4 and earlier are affected by multiple vulnerabilities.
A flaw in mirror zone validity checking. It can allow zone data to be spoofed.
(CVE-2019-6475)
A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query.
(CVE-2019-6476)
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(130212);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");
script_cve_id("CVE-2019-6475", "CVE-2019-6476");
script_xref(name:"IAVA", value:"2019-A-0397-S");
script_name(english:"ISC BIND 9.14.x < 9.14.7 / 9.15.x < 9.15.5 Multiple Vulnerabilities");
script_summary(english:"Checks the version of ISC BIND.");
script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"ISC BIND versions 9.14.6 / 9.15.4 and earlier are affected by multiple vulnerabilities.
- A flaw in mirror zone validity checking. It can allow zone data to be spoofed.
(CVE-2019-6475)
- A defect in code added to support QNAME minimization can cause named to exit with an
assertion failure if a forwarder returns a referral rather than resolving the query.
(CVE-2019-6476)");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/cve-2019-6475");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/cve-2019-6476");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-00913");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-00861");
script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.14.7 / 9.15.5 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:N/UI:N/S:U/C:N/I:H/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-2019-6475");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/16");
script_set_attribute(attribute:"patch_publication_date", value:"2019/10/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/25");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:isc:bind");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"DNS");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("bind_version.nasl");
script_require_keys("bind/version", "Settings/ParanoidReport");
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
vcf::bind::initialize();
app_info = vcf::get_app_info(app:'BIND', port:53, kb_ver:'bind/version', service:TRUE, proto:'UDP');
if (report_paranoia < 2) audit(AUDIT_PARANOID);
constraints = [
{ 'min_version' : '9.14.0', 'max_version' : '9.14.6' },
{ 'min_version' : '9.15.0', 'max_version' : '9.15.4' }
];
constraints = vcf::bind::filter_constraints(constraints:constraints, version:app_info.version);
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);