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
7.1 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
15.7%
The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6690-1 advisory.
A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled. (CVE-2023-3966)
A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses. (CVE-2023-5366)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6690-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(191928);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/12");
script_cve_id("CVE-2023-3966", "CVE-2023-5366");
script_xref(name:"USN", value:"6690-1");
script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS / 23.10 : Open vSwitch vulnerabilities (USN-6690-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6690-1 advisory.
- A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which
may result in a denial of service and invalid memory accesses. Triggering this issue requires that
hardware offloading via the netlink path is enabled. (CVE-2023-3966)
- A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual
machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted
packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary
IP addresses. (CVE-2023-5366)
Note that Nessus has not tested for these issues 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-6690-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/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-2023-5366");
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:"2023/10/06");
script_set_attribute(attribute:"patch_publication_date", value:"2024/03/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/12");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.10");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-ipsec");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-pki");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-source");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch-dpdk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-test");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-testcontroller");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openvswitch-vtep");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-openvswitch");
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) 2024 Canonical, Inc. / NASL script (C) 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 (! ('20.04' >< os_release || '22.04' >< os_release || '23.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04 / 23.10', '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': '20.04', 'pkgname': 'openvswitch-common', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-pki', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-source', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-switch', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-switch-dpdk', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-test', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-testcontroller', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'openvswitch-vtep', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '20.04', 'pkgname': 'python3-openvswitch', 'pkgver': '2.13.8-0ubuntu1.4'},
{'osver': '22.04', 'pkgname': 'openvswitch-common', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-ipsec', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-pki', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-source', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-switch', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-switch-dpdk', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-test', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-testcontroller', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'openvswitch-vtep', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '22.04', 'pkgname': 'python3-openvswitch', 'pkgver': '2.17.9-0ubuntu0.22.04.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-common', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-ipsec', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-pki', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-source', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-switch', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-switch-dpdk', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-test', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-testcontroller', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'openvswitch-vtep', 'pkgver': '3.2.2-0ubuntu0.23.10.1'},
{'osver': '23.10', 'pkgname': 'python3-openvswitch', 'pkgver': '3.2.2-0ubuntu0.23.10.1'}
];
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, 'openvswitch-common / openvswitch-ipsec / openvswitch-pki / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | openvswitch-source | p-cpe:/a:canonical:ubuntu_linux:openvswitch-source |
canonical | ubuntu_linux | openvswitch-switch | p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch |
canonical | ubuntu_linux | openvswitch-switch-dpdk | p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch-dpdk |
canonical | ubuntu_linux | openvswitch-test | p-cpe:/a:canonical:ubuntu_linux:openvswitch-test |
canonical | ubuntu_linux | openvswitch-testcontroller | p-cpe:/a:canonical:ubuntu_linux:openvswitch-testcontroller |
canonical | ubuntu_linux | openvswitch-vtep | p-cpe:/a:canonical:ubuntu_linux:openvswitch-vtep |
canonical | ubuntu_linux | python3-openvswitch | p-cpe:/a:canonical:ubuntu_linux:python3-openvswitch |
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:lts |
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:lts |
canonical | ubuntu_linux | 23.10 | cpe:/o:canonical:ubuntu_linux:23.10 |
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
7.1 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
15.7%