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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.NEWSTART_CGSL_NS-SA-2023-0010_NSS.NASL
HistoryApr 11, 2023 - 12:00 a.m.

NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Vulnerability (NS-SA-2023-0010)

2023-04-1100:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
8

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has nss packages installed that are affected by a vulnerability:

  • NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS #7, or PKCS #12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. Note: This vulnerability does NOT impact Mozilla Firefox. However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
    (CVE-2021-43527)

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 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2023-0010. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(174064);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/19");

  script_cve_id("CVE-2021-43527");

  script_name(english:"NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Vulnerability (NS-SA-2023-0010)");

  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 CORE 5.05 / MAIN 5.05, has nss packages installed that are affected by a
vulnerability:

  - NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow
    when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures
    encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for
    certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how
    they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and
    PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and
    Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
    (CVE-2021-43527)

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-2023-0010");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/info/CVE-2021-43527");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL nss 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:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-43527");

  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:"2021/12/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nss-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss-sysinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nss-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_core:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:5");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 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 os_release = get_kb_item('Host/ZTE-CGSL/release');
if (isnull(os_release) || os_release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (os_release !~ "CGSL CORE 5.05" &&
    os_release !~ "CGSL MAIN 5.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.05 / NewStart CGSL MAIN 5.05');

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 CORE 5.05': [
    'nss-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite',
    'nss-debuginfo-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite',
    'nss-devel-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite',
    'nss-pkcs11-devel-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite',
    'nss-sysinit-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite',
    'nss-tools-3.67.0-4.el7_9.cgslv5_5.0.2.g2357493.lite'
  ],
  'CGSL MAIN 5.05': [
    'nss-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc',
    'nss-debuginfo-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc',
    'nss-devel-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc',
    'nss-pkcs11-devel-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc',
    'nss-sysinit-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc',
    'nss-tools-3.67.0-4.el7_9.cgslv5_5.0.1.g27dfedc'
  ]
};
var pkg_list = pkgs[os_release];

foreach (pkg in pkg_list)
  if (rpm_check(release:'ZTE ' + os_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, 'nss');
}
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