ISC BIND versions 9.12.x prior to 9.12.4-P1, or 9.13.x prior to 9.14.1 are affected by a DoS vulnerability in the nxdomain-redirect feature in the query.c. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(124588);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/22");
script_cve_id("CVE-2019-6467");
script_bugtraq_id(108071);
script_xref(name:"IAVA", value:"2019-A-0139-S");
script_name(english:"ISC BIND 9.12.x < 9.12.4-P1, 9.13.x < 9.14.1 Denial of Service Vulnerability");
script_summary(english:"Checks the version of ISC BIND.");
script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by a denial of service vulnerability.");
script_set_attribute(attribute:"description", value:
"ISC BIND versions 9.12.x prior to 9.12.4-P1, or 9.13.x prior to 9.14.1 are affected by a DoS vulnerability in the
nxdomain-redirect feature in the query.c. An unauthenticated, remote attacker can exploit this issue, to cause the
application to stop responding.");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/docs/aa-00861");
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/cve-2019-6467");
script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.12.4-P1, 9.14.1, or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-6467");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/24");
script_set_attribute(attribute:"patch_publication_date", value:"2019/04/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/03");
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) 2019-2020 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" : "9.12.0", "fixed_version" : "9.12.4-P1" },
{ "min_version" : "9.13.0", "fixed_version" : "9.14.1" }
];
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);