The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:1167 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-2020:1167 and
# CentOS Errata and Security Advisory 2020:1167 respectively.
#
include('compat.inc');
if (description)
{
script_id(135348);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/19");
script_cve_id("CVE-2019-14850");
script_xref(name:"RHSA", value:"2020:1167");
script_name(english:"CentOS 7 : nbdkit (CESA-2020:1167)");
script_set_attribute(attribute:"synopsis", value:
"The remote CentOS host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2020:1167 advisory.
- nbdkit: denial of service due to premature opening of
back-end connection (CVE-2019-14850)
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-cr-announce/2020-April/012538.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5282b40b");
script_set_attribute(attribute:"solution", value:
"Update the affected nbdkit packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14850");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"patch_publication_date", value:"2020/04/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-basic-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-example-plugins");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-plugin-python-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-plugin-python2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:nbdkit-plugin-vddk");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CentOS Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 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");
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]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-basic-plugins-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-devel-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-example-plugins-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-plugin-python-common-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-plugin-python2-1.8.0-3.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"nbdkit-plugin-vddk-1.8.0-3.el7")) flag++;
if (flag)
{
cr_plugin_caveat = '\n' +
'NOTE: The security advisory associated with this vulnerability has a\n' +
'fixed package version that may only be available in the continuous\n' +
'release (CR) repository for CentOS, until it is present in the next\n' +
'point release of CentOS.\n\n' +
'If an equal or higher package level does not exist in the baseline\n' +
'repository for your major version of CentOS, then updates from the CR\n' +
'repository will need to be applied in order to address the\n' +
'vulnerability.\n';
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
extra : rpm_report_get() + cr_plugin_caveat
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nbdkit / nbdkit-basic-plugins / nbdkit-devel / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | nbdkit | p-cpe:/a:centos:centos:nbdkit |
centos | centos | nbdkit-basic-plugins | p-cpe:/a:centos:centos:nbdkit-basic-plugins |
centos | centos | nbdkit-devel | p-cpe:/a:centos:centos:nbdkit-devel |
centos | centos | nbdkit-example-plugins | p-cpe:/a:centos:centos:nbdkit-example-plugins |
centos | centos | nbdkit-plugin-python-common | p-cpe:/a:centos:centos:nbdkit-plugin-python-common |
centos | centos | nbdkit-plugin-python2 | p-cpe:/a:centos:centos:nbdkit-plugin-python2 |
centos | centos | nbdkit-plugin-vddk | p-cpe:/a:centos:centos:nbdkit-plugin-vddk |
centos | centos | 7 | cpe:/o:centos:centos:7 |