The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-25214 advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(149320);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/05/13");
script_cve_id("CVE-2021-25214");
script_name(english:"ISC BIND 9.8.5 < 9.11.31 / 9.9.3 < 9.11.31 / 9.9.3-S1 < 9.11.31-S1 / 9.12.0 < 9.16.15 / 9.16.8-S1 < 9.16.15-S1 / 9.17.0 < 9.17.12 Assertion Failure (CVE-2021-25214)");
script_set_attribute(attribute:"synopsis", value:
"The remote name server is affected by an assertion failure vulnerability vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the CVE-2021-25214 advisory.
- In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and
9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11
of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR
triggering the flaw described above, the named process will terminate due to a failed assertion the next
time the transferred secondary zone is refreshed. (CVE-2021-25214)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://kb.isc.org/v1/docs/CVE-2021-25214");
script_set_attribute(attribute:"solution", value:
"Upgrade to ISC BIND version 9.11.31 / 9.11.31-S1 / 9.16.15 / 9.16.15-S1 / 9.17.12 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/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-2021-25214");
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:"2021/04/28");
script_set_attribute(attribute:"patch_publication_date", value:"2021/04/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/06");
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_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"DNS");
script_copyright(english:"This script is Copyright (C) 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' : '9.8.5', 'max_version' : '9.8.8', 'fixed_version' : '9.11.31' },
{ 'min_version' : '9.9.3', 'max_version' : '9.11.29', 'fixed_version' : '9.11.31' },
{ 'min_version' : '9.9.3-S1', 'max_version' : '9.11.29-S1', 'fixed_version' : '9.11.31-S1' },
{ 'min_version' : '9.12.0', 'max_version' : '9.16.13', 'fixed_version' : '9.16.15' },
{ 'min_version' : '9.16.8-S1', 'max_version' : '9.16.13-S1', 'fixed_version' : '9.16.15-S1' },
{ 'min_version' : '9.17.0', 'max_version' : '9.17.11', 'fixed_version' : '9.17.12' }
];
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);