The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has systemd packages installed that are affected by multiple vulnerabilities:
A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re- execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239.
(CVE-2018-15686)
It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes.
Versions before v237 are vulnerable. (CVE-2018-16888)
An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ‘:’. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable. (CVE-2018-16866)
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-2019-0196. The text
# itself is copyright (C) ZTE, Inc.
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(129929);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/07/30");
script_cve_id("CVE-2018-15686", "CVE-2018-16866", "CVE-2018-16888");
script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : systemd Multiple Vulnerabilities (NS-SA-2019-0196)");
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 systemd packages installed that are affected
by multiple vulnerabilities:
- A vulnerability in unit_deserialize of systemd allows an
attacker to supply arbitrary state across systemd re-
execution via NotifyAccess. This can be used to
improperly influence systemd execution and possibly lead
to root privilege escalation. Affected releases are
systemd versions up to and including 239.
(CVE-2018-15686)
- It was discovered systemd does not correctly check the
content of PIDFile files before using it to kill
processes. When a service is run from an unprivileged
user (e.g. User field set in the service file), a local
attacker who is able to write to the PIDFile of the
mentioned service may use this flaw to trick systemd
into killing other services and/or privileged processes.
Versions before v237 are vulnerable. (CVE-2018-16888)
- An out of bounds read was discovered in systemd-journald
in the way it parses log messages that terminate with a
colon ':'. A local attacker can use this flaw to
disclose process memory data. Versions from v221 to v239
are vulnerable. (CVE-2018-16866)
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-2019-0196");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL systemd 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-2018-15686");
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:"2018/10/26");
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": [
"libgudev1-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"libgudev1-devel-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-debuginfo-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-devel-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-journal-gateway-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-libs-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-networkd-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-python-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-resolved-219-67.el7.cgslv5.0.14.g2212dcb.lite",
"systemd-sysv-219-67.el7.cgslv5.0.14.g2212dcb.lite"
],
"CGSL MAIN 5.04": [
"libgudev1-219-67.el7.cgslv5.0.10.gf4ec716",
"libgudev1-devel-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-debuginfo-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-devel-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-journal-gateway-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-libs-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-networkd-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-python-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-resolved-219-67.el7.cgslv5.0.10.gf4ec716",
"systemd-sysv-219-67.el7.cgslv5.0.10.gf4ec716"
]
};
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, "systemd");
}