The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected by multiple vulnerabilities:
An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory, aka ‘Windows Kernel Information Disclosure Vulnerability’. This CVE ID is unique from CVE-2019-1071, CVE-2019-1073. (CVE-2019-1125)
A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel’s vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0189. The text
# itself is copyright (C) ZTE, Inc.
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(129888);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2019-1125", "CVE-2019-14835");
script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0189)");
script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected
by multiple vulnerabilities:
- An information disclosure vulnerability exists when
certain central processing units (CPU) speculatively
access memory, aka 'Windows Kernel Information
Disclosure Vulnerability'. This CVE ID is unique from
CVE-2019-1071, CVE-2019-1073. (CVE-2019-1125)
- A buffer overflow flaw was found, in versions from
2.6.34 to 5.2.x, in the way Linux kernel's vhost
functionality that translates virtqueue buffers to IOVs,
logged the buffer descriptors during migration. A
privileged guest user able to pass descriptors with
invalid length to the host when migration is underway,
could use this flaw to increase their privileges on the
host. (CVE-2019-14835)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0189");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL kernel-rt packages. Note that updated packages may not be available yet. Please contact ZTE
for more information.");
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:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14835");
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:"2019/09/03");
script_set_attribute(attribute:"patch_publication_date", value:"2019/10/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/15");
script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"NewStart CGSL Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");
if (release !~ "CGSL CORE 5.04" &&
release !~ "CGSL MAIN 5.04")
audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');
if (!get_kb_item("Host/ZTE-CGSL/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, "NewStart Carrier Grade Server Linux", cpu);
flag = 0;
pkgs = {
"CGSL CORE 5.04": [
"kernel-rt-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debuginfo-common-x86_64-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-doc-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d"
],
"CGSL MAIN 5.04": [
"kernel-rt-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debug-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-debuginfo-common-x86_64-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-doc-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-devel-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-kvm-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d",
"kernel-rt-trace-kvm-debuginfo-3.10.0-693.21.1.rt56.639.el7.cgslv5_4.20.294.gaf4b22d"
]
};
pkg_list = pkgs[release];
foreach (pkg in pkg_list)
if (rpm_check(release:"ZTE " + release, reference:pkg)) 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, "kernel-rt");
}