The remote NewStart CGSL host, running version MAIN 6.01, has gnutls 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-2020-0033. The text
# itself is copyright (C) ZTE, Inc.
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(138777);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2020-11501");
script_name(english:"NewStart CGSL MAIN 6.01 : gnutls Vulnerability (NS-SA-2020-0033)");
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 6.01, has gnutls packages installed that are affected by a
vulnerability:
- GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography
for DTLS. The earliest affected version is 3.6.3
(2018-07-16) because of an error in a 2017-10-06 commit.
The DTLS client always uses 32 '\0' bytes instead of a
random value, and thus contributes no randomness to a
DTLS negotiation. This breaks the security guarantees of
the DTLS protocol. (CVE-2020-11501)
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-2020-0033");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL gnutls packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:H/PR:N/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-2020-11501");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/03");
script_set_attribute(attribute:"patch_publication_date", value:"2020/07/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/21");
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 6.01")
audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 6.01');
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 6.01": [
"gnutls-3.6.8-10.el8_2",
"gnutls-c++-3.6.8-10.el8_2",
"gnutls-c++-debuginfo-3.6.8-10.el8_2",
"gnutls-dane-3.6.8-10.el8_2",
"gnutls-dane-debuginfo-3.6.8-10.el8_2",
"gnutls-debuginfo-3.6.8-10.el8_2",
"gnutls-debugsource-3.6.8-10.el8_2",
"gnutls-devel-3.6.8-10.el8_2",
"gnutls-utils-3.6.8-10.el8_2",
"gnutls-utils-debuginfo-3.6.8-10.el8_2"
]
};
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_WARNING,
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, "gnutls");
}