5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.944 High
EPSS
Percentile
99.2%
It was discovered that Bind incorrectly handled the deny-answer-aliases feature. If this feature is enabled, a remote attacker could use this issue to cause Bind to crash, resulting in a denial of service.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3769-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include('compat.inc');
if (description)
{
script_id(117630);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");
script_cve_id("CVE-2018-5740");
script_xref(name:"USN", value:"3769-1");
script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Bind vulnerability (USN-3769-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It was discovered that Bind incorrectly handled the
deny-answer-aliases feature. If this feature is enabled, a remote
attacker could use this issue to cause Bind to crash, resulting in a
denial of service.
Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-3769-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
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-2018-5740");
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:"2019/01/16");
script_set_attribute(attribute:"patch_publication_date", value:"2018/09/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/21");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-host");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9utils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dnsutils");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:host");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind-export-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind9-140");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind9-160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind9-90");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns-export1100");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns-export1100-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns-export162");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns-export162-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns100");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns1100");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns162");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs-export141");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs-export141-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs-export160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs-export160-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs141");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc-export160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc-export160-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc-export169");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc-export169-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc169");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc95");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc-export140");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc-export140-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc-export160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc-export160-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc140");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc90");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg-export140");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg-export140-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg-export160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg-export160-udeb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg140");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg90");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liblwres141");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liblwres160");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liblwres90");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:lwresd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release || '16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04 / 18.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '14.04', 'pkgname': 'bind9', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'host', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libbind-dev', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libbind9-90', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libdns100', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libisc95', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libisccc90', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'libisccfg90', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'liblwres90', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '14.04', 'pkgname': 'lwresd', 'pkgver': '1:9.9.5.dfsg-3ubuntu0.18'},
{'osver': '16.04', 'pkgname': 'bind9', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'host', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libbind-dev', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libbind-export-dev', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libbind9-140', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libdns-export162', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libdns-export162-udeb', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libdns162', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libirs-export141', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libirs-export141-udeb', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libirs141', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisc-export160', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisc-export160-udeb', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisc160', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccc-export140', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccc-export140-udeb', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccc140', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccfg-export140', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccfg-export140-udeb', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'libisccfg140', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'liblwres141', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '16.04', 'pkgname': 'lwresd', 'pkgver': '1:9.10.3.dfsg.P4-8ubuntu1.11'},
{'osver': '18.04', 'pkgname': 'bind9', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libbind-dev', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libbind-export-dev', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libbind9-160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libdns-export1100', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libdns-export1100-udeb', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libdns1100', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libirs-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libirs-export160-udeb', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libirs160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisc-export169', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisc-export169-udeb', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisc169', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccc-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccc-export160-udeb', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccc160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccfg-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccfg-export160-udeb', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'libisccfg160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'},
{'osver': '18.04', 'pkgname': 'liblwres160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.2'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bind9 / bind9-host / bind9utils / dnsutils / host / libbind-dev / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | libdns162 | p-cpe:/a:canonical:ubuntu_linux:libdns162 |
canonical | ubuntu_linux | libirs-export141 | p-cpe:/a:canonical:ubuntu_linux:libirs-export141 |
canonical | ubuntu_linux | libirs-export141-udeb | p-cpe:/a:canonical:ubuntu_linux:libirs-export141-udeb |
canonical | ubuntu_linux | libirs-export160 | p-cpe:/a:canonical:ubuntu_linux:libirs-export160 |
canonical | ubuntu_linux | libirs-export160-udeb | p-cpe:/a:canonical:ubuntu_linux:libirs-export160-udeb |
canonical | ubuntu_linux | libirs141 | p-cpe:/a:canonical:ubuntu_linux:libirs141 |
canonical | ubuntu_linux | libirs160 | p-cpe:/a:canonical:ubuntu_linux:libirs160 |
canonical | ubuntu_linux | libisc-export160 | p-cpe:/a:canonical:ubuntu_linux:libisc-export160 |
canonical | ubuntu_linux | libisc-export160-udeb | p-cpe:/a:canonical:ubuntu_linux:libisc-export160-udeb |
canonical | ubuntu_linux | libisc-export169 | p-cpe:/a:canonical:ubuntu_linux:libisc-export169 |
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.944 High
EPSS
Percentile
99.2%