According to the versions of the libvirt packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :
A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs’ dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.
(CVE-2021-3631)
A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt’s API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd). (CVE-2022-0897)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(165896);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/10");
script_cve_id("CVE-2021-3631", "CVE-2022-0897");
script_name(english:"EulerOS Virtualization 3.0.6.6 : libvirt (EulerOS-SA-2022-2515)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the libvirt packages installed, the EulerOS Virtualization installation on the remote host
is affected by the following vulnerabilities :
- A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This
flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out
of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.
(CVE-2021-3631)
- A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to
acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no
protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw
allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to
crash the network filter management daemon (libvirtd/virtnwfilterd). (CVE-2022-0897)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security
advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional
issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2022-2515
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0ad72db3");
script_set_attribute(attribute:"solution", value:
"Update the affected libvirt packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3631");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/11/09");
script_set_attribute(attribute:"patch_publication_date", value:"2022/10/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-admin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-client");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-config-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-config-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-interface");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nodedev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-secret");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-disk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-gluster");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-iscsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-logical");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-mpath");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-rbd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-driver-storage-scsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-daemon-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libvirt-python");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.6.6");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.6.6") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.6.6");
if (!get_kb_item("Host/EulerOS/rpm-list")) 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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
var flag = 0;
var pkgs = [
"libvirt-3.2.0-551",
"libvirt-admin-3.2.0-551",
"libvirt-client-3.2.0-551",
"libvirt-daemon-3.2.0-551",
"libvirt-daemon-config-network-3.2.0-551",
"libvirt-daemon-config-nwfilter-3.2.0-551",
"libvirt-daemon-driver-interface-3.2.0-551",
"libvirt-daemon-driver-network-3.2.0-551",
"libvirt-daemon-driver-nodedev-3.2.0-551",
"libvirt-daemon-driver-nwfilter-3.2.0-551",
"libvirt-daemon-driver-qemu-3.2.0-551",
"libvirt-daemon-driver-secret-3.2.0-551",
"libvirt-daemon-driver-storage-3.2.0-551",
"libvirt-daemon-driver-storage-core-3.2.0-551",
"libvirt-daemon-driver-storage-disk-3.2.0-551",
"libvirt-daemon-driver-storage-gluster-3.2.0-551",
"libvirt-daemon-driver-storage-iscsi-3.2.0-551",
"libvirt-daemon-driver-storage-logical-3.2.0-551",
"libvirt-daemon-driver-storage-mpath-3.2.0-551",
"libvirt-daemon-driver-storage-rbd-3.2.0-551",
"libvirt-daemon-driver-storage-scsi-3.2.0-551",
"libvirt-daemon-kvm-3.2.0-551",
"libvirt-devel-3.2.0-551",
"libvirt-docs-3.2.0-551",
"libvirt-libs-3.2.0-551",
"libvirt-python-3.2.0-105"
];
foreach (var pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libvirt");
}
Vendor | Product | Version | CPE |
---|---|---|---|
huawei | euleros | libvirt | p-cpe:/a:huawei:euleros:libvirt |
huawei | euleros | libvirt-admin | p-cpe:/a:huawei:euleros:libvirt-admin |
huawei | euleros | libvirt-client | p-cpe:/a:huawei:euleros:libvirt-client |
huawei | euleros | libvirt-daemon | p-cpe:/a:huawei:euleros:libvirt-daemon |
huawei | euleros | libvirt-daemon-config-network | p-cpe:/a:huawei:euleros:libvirt-daemon-config-network |
huawei | euleros | libvirt-daemon-config-nwfilter | p-cpe:/a:huawei:euleros:libvirt-daemon-config-nwfilter |
huawei | euleros | libvirt-daemon-driver-interface | p-cpe:/a:huawei:euleros:libvirt-daemon-driver-interface |
huawei | euleros | libvirt-daemon-driver-network | p-cpe:/a:huawei:euleros:libvirt-daemon-driver-network |
huawei | euleros | libvirt-daemon-driver-nodedev | p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nodedev |
huawei | euleros | libvirt-daemon-driver-nwfilter | p-cpe:/a:huawei:euleros:libvirt-daemon-driver-nwfilter |