The remote NewStart CGSL host, running version MAIN 4.05, has dbus packages installed that are affected by a vulnerability:
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-2020-0016. The text
# itself is copyright (C) ZTE, Inc.
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(134309);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2019-12749");
script_bugtraq_id(108751);
script_name(english:"NewStart CGSL MAIN 4.05 : dbus Vulnerability (NS-SA-2020-0016)");
script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 4.05, has dbus packages installed that are affected by a
vulnerability:
- dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x
before 1.13.12, as used in DBusServer in Canonical
Upstart in Ubuntu 14.04 (and in some, less common, uses
of dbus-daemon), allows cookie spoofing because of
symlink mishandling in the reference implementation of
DBUS_COOKIE_SHA1 in the libdbus library. (This only
affects the DBUS_COOKIE_SHA1 authentication mechanism.)
A malicious client with write access to its own home
directory could manipulate a ~/.dbus-keyrings symlink to
cause a DBusServer with a different uid to read and
write in unintended locations. In the worst case, this
could result in the DBusServer reusing a cookie that is
known to the malicious client, and treating that cookie
as evidence that a subsequent client connection came
from an attacker-chosen uid, allowing authentication
bypass. (CVE-2019-12749)
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-2020-0016");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL dbus 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:P/I:P/A:N");
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:L/UI:N/S:U/C:H/I:H/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-12749");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/11");
script_set_attribute(attribute:"patch_publication_date", value:"2020/03/04");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/08");
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) 2020-2021 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 MAIN 4.05")
audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 4.05');
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 MAIN 4.05": [
"dbus-1.2.24-11.el6_10",
"dbus-debuginfo-1.2.24-11.el6_10",
"dbus-devel-1.2.24-11.el6_10",
"dbus-doc-1.2.24-11.el6_10",
"dbus-libs-1.2.24-11.el6_10",
"dbus-x11-1.2.24-11.el6_10"
]
};
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_NOTE,
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, "dbus");
}