CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%
The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-3353-1 advisory.
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered that Heimdal clients incorrectly trusted unauthenticated portions of Kerberos tickets. A remote attacker could use this to impersonate trusted network services or perform other attacks.
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the applicationβs self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3353-1. 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(101769);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id("CVE-2017-11103");
script_xref(name:"USN", value:"3353-1");
script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : Heimdal vulnerability (USN-3353-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by a vulnerability as referenced
in the USN-3353-1 advisory.
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered that Heimdal clients incorrectly trusted
unauthenticated portions of Kerberos tickets. A remote attacker could use this to impersonate trusted
network services or perform other attacks.
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
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://ubuntu.com/security/notices/USN-3353-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/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:H/PR:N/UI:N/S:U/C:H/I:H/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-2017-11103");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/13");
script_set_attribute(attribute:"patch_publication_date", value:"2017/07/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/07/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkrb5-26-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libotp0-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libroken18-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsl0-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwind0-heimdal");
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:"p-cpe:/a:canonical:ubuntu_linux:heimdal-clients");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-clients-x");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-kcm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-kdc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-multidev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-servers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:heimdal-servers-x");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libasn1-8-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgssapi3-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libhcrypto4-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libhdb9-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libheimbase1-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libheimntlm0-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libhx509-5-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkadm5clnt7-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkadm5srv8-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkafs0-heimdal");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkdc2-heimdal");
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) 2017-2024 Canonical, Inc. / NASL script (C) 2017-2024 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)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', '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': 'heimdal-clients', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-clients-x', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-dev', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-kcm', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-kdc', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-multidev', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-servers', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'heimdal-servers-x', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libasn1-8-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libgssapi3-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libhcrypto4-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libhdb9-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libheimbase1-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libheimntlm0-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libhx509-5-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libkadm5clnt7-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libkadm5srv8-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libkafs0-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libkdc2-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libkrb5-26-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libotp0-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libroken18-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libsl0-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '14.04', 'pkgname': 'libwind0-heimdal', 'pkgver': '1.6~git20131207+dfsg-1ubuntu1.2'},
{'osver': '16.04', 'pkgname': 'heimdal-clients', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'heimdal-dev', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'heimdal-kcm', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'heimdal-kdc', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'heimdal-multidev', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'heimdal-servers', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libasn1-8-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libgssapi3-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libhcrypto4-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libhdb9-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libheimbase1-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libheimntlm0-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libhx509-5-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libkadm5clnt7-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libkadm5srv8-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libkafs0-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libkdc2-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libkrb5-26-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libotp0-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libroken18-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libsl0-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'},
{'osver': '16.04', 'pkgname': 'libwind0-heimdal', 'pkgver': '1.7~git20150920+dfsg-4ubuntu1.16.04.1'}
];
var flag = 0;
foreach var 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)
{
var extra = '';
extra += ubuntu_report_get();
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'heimdal-clients / heimdal-clients-x / heimdal-dev / heimdal-kcm / etc');
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
92.7%