The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the CESA-2020:5040 advisory.
Note that Nessus has not tested for this issue 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 Red Hat Security Advisory RHSA-2020:5040 and
# CentOS Errata and Security Advisory 2020:5040 respectively.
##
include('compat.inc');
if (description)
{
script_id(143055);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/11/30");
script_cve_id("CVE-2020-25637");
script_xref(name:"RHSA", value:"2020:5040");
script_name(english:"CentOS 7 : libvirt (CESA-2020:5040)");
script_summary(english:"Checks the rpm output for the updated packages");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS Linux host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the
CESA-2020:5040 advisory.
- libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://lists.centos.org/pipermail/centos-announce/2020-November/035841.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?583345b5");
script_set_attribute(attribute:"see_also", value:"https://cwe.mitre.org/data/definitions/416.html");
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:L/AC:L/PR:H/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-2020-25637");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(416);
script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/06");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-admin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-bash-completion");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-client");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-config-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-interface");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-lxc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-network");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nodedev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-nwfilter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-qemu");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-secret");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-disk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-gluster");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-iscsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-logical");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-mpath");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-rbd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-scsi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-daemon-lxc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-lock-sanlock");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-login-shell");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libvirt-nss");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CentOS Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list", "Host/cpu");
exit(0);
}
include('audit.inc');
include('global_settings.inc');
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item('Host/CentOS/release');
if (isnull(release) || 'CentOS' >!< release) audit(AUDIT_OS_NOT, 'CentOS');
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'CentOS');
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'CentOS 7.x', 'CentOS ' + os_ver);
if (!get_kb_item('Host/CentOS/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'CentOS', cpu);
pkgs = [
{'reference':'libvirt-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-admin-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-bash-completion-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-client-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'i686', 'release':'CentOS-7'},
{'reference':'libvirt-client-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-config-network-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-config-nwfilter-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-interface-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-lxc-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-network-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-nodedev-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-nwfilter-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-qemu-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-secret-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-core-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-disk-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-gluster-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-iscsi-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-logical-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-mpath-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-rbd-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-driver-storage-scsi-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-kvm-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-daemon-lxc-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-devel-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'i686', 'release':'CentOS-7'},
{'reference':'libvirt-devel-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-docs-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-libs-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'i686', 'release':'CentOS-7'},
{'reference':'libvirt-libs-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-lock-sanlock-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-login-shell-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'},
{'reference':'libvirt-nss-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'i686', 'release':'CentOS-7'},
{'reference':'libvirt-nss-4.5.0-36.el7_9.3', 'sp':'9', 'cpu':'x86_64', 'release':'CentOS-7'}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
sp = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
epoch = NULL;
allowmaj = 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['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && release) {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libvirt / libvirt-admin / libvirt-bash-completion / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | libvirt | p-cpe:/a:centos:centos:libvirt |
centos | centos | libvirt-admin | p-cpe:/a:centos:centos:libvirt-admin |
centos | centos | libvirt-bash-completion | p-cpe:/a:centos:centos:libvirt-bash-completion |
centos | centos | libvirt-client | p-cpe:/a:centos:centos:libvirt-client |
centos | centos | libvirt-daemon | p-cpe:/a:centos:centos:libvirt-daemon |
centos | centos | libvirt-daemon-config-network | p-cpe:/a:centos:centos:libvirt-daemon-config-network |
centos | centos | libvirt-daemon-config-nwfilter | p-cpe:/a:centos:centos:libvirt-daemon-config-nwfilter |
centos | centos | libvirt-daemon-driver-interface | p-cpe:/a:centos:centos:libvirt-daemon-driver-interface |
centos | centos | libvirt-daemon-driver-lxc | p-cpe:/a:centos:centos:libvirt-daemon-driver-lxc |
centos | centos | libvirt-daemon-driver-network | p-cpe:/a:centos:centos:libvirt-daemon-driver-network |