3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
61.4%
The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2812-1 advisory.
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)
An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability. (CVE-2021-3667)
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 70300
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2021:2812-1. The text itself
# is copyright (C) SUSE.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152765);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/13");
script_cve_id("CVE-2021-3631", "CVE-2021-3667");
script_xref(name:"SuSE", value:"SUSE-SU-2021:2812-1");
script_name(english:"SUSE SLED15 / SLES15 Security Update : libvirt (SUSE-SU-2021:2812-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2021:2812-1 advisory.
- 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)
- An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in
the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly
released on ACL permission failure. Clients connecting to the read-write socket with limited ACL
permissions could use this flaw to acquire the lock and prevent other users from accessing storage
pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability
is to system availability. (CVE-2021-3667)
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://bugzilla.suse.com/1184253");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187871");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188232");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188843");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3631");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3667");
# https://lists.suse.com/pipermail/sle-security-updates/2021-August/009329.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?077532b9");
script_set_attribute(attribute:"solution", value:
"Update the affected 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:"2021/08/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-admin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-bash-completion");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-client");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-config-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-config-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-interface");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-libxl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-lxc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nodedev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-secret");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-disk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-iscsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-iscsi-direct");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-logical");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-mpath");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-rbd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-scsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-hooks");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-lxc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-daemon-xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-lock-sanlock");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libvirt-nss");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 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/SuSE/release", "Host/SuSE/rpm-list");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLES15', 'SUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);
var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP3", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP3", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'libvirt-libs-7.1.0-6.5.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-basesystem-release-15.3']},
{'reference':'libvirt-libs-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-basesystem-release-15.3']},
{'reference':'libvirt-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-admin-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-bash-completion-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-client-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-config-network-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-config-nwfilter-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-interface-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-libxl-7.1.0-6.5.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-lxc-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-network-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-nodedev-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-nwfilter-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-qemu-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-secret-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-core-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-disk-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-iscsi-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-iscsi-direct-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-logical-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-mpath-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-rbd-7.1.0-6.5.1', 'sp':'3', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-rbd-7.1.0-6.5.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-driver-storage-scsi-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-hooks-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-lxc-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-qemu-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-daemon-xen-7.1.0-6.5.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-devel-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-doc-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-lock-sanlock-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']},
{'reference':'libvirt-nss-7.1.0-6.5.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-server-applications-release-15.3']}
];
var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var exists_check = NULL;
var rpm_spec_vers_cmp = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && _release) {
if (exists_check) {
var check_flag = 0;
foreach var check (exists_check) {
if (!rpm_exists(release:_release, rpm:check)) continue;
check_flag++;
}
if (!check_flag) continue;
}
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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 / libvirt-admin / libvirt-bash-completion / libvirt-client / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
novell | suse_linux | libvirt | p-cpe:/a:novell:suse_linux:libvirt |
novell | suse_linux | libvirt-admin | p-cpe:/a:novell:suse_linux:libvirt-admin |
novell | suse_linux | libvirt-bash-completion | p-cpe:/a:novell:suse_linux:libvirt-bash-completion |
novell | suse_linux | libvirt-client | p-cpe:/a:novell:suse_linux:libvirt-client |
novell | suse_linux | libvirt-daemon | p-cpe:/a:novell:suse_linux:libvirt-daemon |
novell | suse_linux | libvirt-daemon-config-network | p-cpe:/a:novell:suse_linux:libvirt-daemon-config-network |
novell | suse_linux | libvirt-daemon-config-nwfilter | p-cpe:/a:novell:suse_linux:libvirt-daemon-config-nwfilter |
novell | suse_linux | libvirt-daemon-driver-interface | p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-interface |
novell | suse_linux | libvirt-daemon-driver-libxl | p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-libxl |
novell | suse_linux | libvirt-daemon-driver-lxc | p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-lxc |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3631
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3667
www.nessus.org/u?077532b9
bugzilla.suse.com/1184253
bugzilla.suse.com/1187871
bugzilla.suse.com/1188232
bugzilla.suse.com/1188843
www.suse.com/security/cve/CVE-2021-3631
www.suse.com/security/cve/CVE-2021-3667
3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
61.4%