The remote NewStart CGSL host, running version MAIN 6.02, has polkit packages installed that are affected by a vulnerability:
Note that Nessus has not tested for this issue but has instead relied only on the applicationâs self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2022-0061. The text
# itself is copyright (C) ZTE, Inc.
##
include('compat.inc');
if (description)
{
script_id(160784);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/30");
script_cve_id("CVE-2021-3560");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/06/02");
script_name(english:"NewStart CGSL MAIN 6.02 : polkit Vulnerability (NS-SA-2022-0061)");
script_set_attribute(attribute:"synopsis", value:
"The remote NewStart CGSL host is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 6.02, has polkit packages installed that are affected by a
vulnerability:
- It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests,
elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged
local attacker to, for example, create a new local administrator. The highest threat from this
vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-3560)
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-2022-0061");
script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/info/CVE-2021-3560");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL polkit 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:H/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:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3560");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Polkit D-Bus Authentication Bypass');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/06/03");
script_set_attribute(attribute:"patch_publication_date", value:"2022/05/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/05/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-debugsource");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:polkit-libs-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:6");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"NewStart CGSL 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/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");
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/ZTE-CGSL/release');
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');
if (release !~ "CGSL MAIN 6.02")
audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 6.02');
if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);
var flag = 0;
var pkgs = {
'CGSL MAIN 6.02': [
'polkit-0.115-11.el8_4.1',
'polkit-debuginfo-0.115-11.el8_4.1',
'polkit-debugsource-0.115-11.el8_4.1',
'polkit-devel-0.115-11.el8_4.1',
'polkit-docs-0.115-11.el8_4.1',
'polkit-libs-0.115-11.el8_4.1',
'polkit-libs-debuginfo-0.115-11.el8_4.1'
]
};
var 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
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'polkit');
}