CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
93.0%
The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2974-1 advisory.
Zuozhi Fzz discovered that QEMU incorrectly handled USB OHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2391)
Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2392)
Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes. (CVE-2016-2538)
Hongke Yang discovered that QEMU incorrectly handled NE2000 emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2841)
Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes. (CVE-2016-2857)
It was discovered that QEMU incorrectly handled the PRNG back-end support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-2858)
Wei Xiao and Qinghao Tang discovered that QEMU incorrectly handled access in the VGA module. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-3710)
Zuozhi Fzz discovered that QEMU incorrectly handled access in the VGA module. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-3712)
Oleksandr Bazhaniuk discovered that QEMU incorrectly handled Luminary Micro Stellaris ethernet controller emulation. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-4001)
Oleksandr Bazhaniuk discovered that QEMU incorrectly handled MIPSnet controller emulation. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-4002)
Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged attacker inside the guest could use this issue to possibly leak host memory bytes. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-4020)
Du Shaobo discovered that QEMU incorrectly handled USB EHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of service. (CVE-2016-4037)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application’s 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-2974-1. 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(91122);
script_version("2.14");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id(
"CVE-2016-2391",
"CVE-2016-2392",
"CVE-2016-2538",
"CVE-2016-2841",
"CVE-2016-2857",
"CVE-2016-2858",
"CVE-2016-3710",
"CVE-2016-3712",
"CVE-2016-4001",
"CVE-2016-4002",
"CVE-2016-4020",
"CVE-2016-4037"
);
script_xref(name:"USN", value:"2974-1");
script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-2974-1)");
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 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-2974-1 advisory.
Zuozhi Fzz discovered that QEMU incorrectly handled USB OHCI emulation support. A privileged attacker
inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2391)
Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker
inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2392)
Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker
inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or
possibly leak host memory bytes. (CVE-2016-2538)
Hongke Yang discovered that QEMU incorrectly handled NE2000 emulation support. A privileged attacker
inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2841)
Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An attacker inside the guest could
use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory
bytes. (CVE-2016-2857)
It was discovered that QEMU incorrectly handled the PRNG back-end support. An attacker inside the guest
could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only applied to
Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-2858)
Wei Xiao and Qinghao Tang discovered that QEMU incorrectly handled access in the VGA module. A privileged
attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service,
or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with
libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-3710)
Zuozhi Fzz discovered that QEMU incorrectly handled access in the VGA module. A privileged attacker inside
the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly
execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers
would be isolated by the libvirt AppArmor profile. (CVE-2016-3712)
Oleksandr Bazhaniuk discovered that QEMU incorrectly handled Luminary Micro Stellaris ethernet controller
emulation. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of
service. (CVE-2016-4001)
Oleksandr Bazhaniuk discovered that QEMU incorrectly handled MIPSnet controller emulation. A remote
attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-4002)
Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged
attacker inside the guest could use this issue to possibly leak host memory bytes. This issue only applied
to Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-4020)
Du Shaobo discovered that QEMU incorrectly handled USB EHCI emulation support. A privileged attacker
inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of
service. (CVE-2016-4037)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
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-2974-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
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: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-2016-3710");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2016-4002");
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:"2016/04/07");
script_set_attribute(attribute:"patch_publication_date", value:"2016/05/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user-binfmt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-user-static");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-utils");
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:qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-block-extra");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-keymaps");
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) 2016-2024 Canonical, Inc. / NASL script (C) 2016-2024 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': 'qemu', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-guest-agent', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-keymaps', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-kvm', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-aarch64', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-arm', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-common', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-mips', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-misc', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-ppc', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-sparc', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-system-x86', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-user', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-user-static', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '14.04', 'pkgname': 'qemu-utils', 'pkgver': '2.0.0+dfsg-2ubuntu1.24'},
{'osver': '16.04', 'pkgname': 'qemu', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-block-extra', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-guest-agent', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-kvm', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-aarch64', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-arm', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-common', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-mips', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-misc', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-ppc', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-s390x', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-sparc', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-system-x86', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-user', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-user-binfmt', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-user-static', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'},
{'osver': '16.04', 'pkgname': 'qemu-utils', 'pkgver': '1:2.5+dfsg-5ubuntu10.1'}
];
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_HOLE,
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, 'qemu / qemu-block-extra / qemu-common / qemu-guest-agent / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2391
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2392
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2538
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2841
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2857
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2858
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3710
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3712
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4001
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4002
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4020
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4037
ubuntu.com/security/notices/USN-2974-1
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
93.0%