NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Multiple Vulnerabilities (NS-SA-2020-0005)

2020-01-20T00:00:00
ID NEWSTART_CGSL_NS-SA-2020-0005_NSS.NASL
Type nessus
Reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-10-02T00:00:00

Description

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

  • Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before being copied into memory and used. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8. (CVE-2019-11729)

  • When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox <

    1. (CVE-2019-11745)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#


# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2020-0005. The text
# itself is copyright (C) ZTE, Inc.


include('compat.inc');

if (description)
{
  script_id(133085);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/21");

  script_cve_id("CVE-2019-11729", "CVE-2019-11745");
  script_bugtraq_id(109086);

  script_name(english:"NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Multiple Vulnerabilities (NS-SA-2020-0005)");

  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 5.05 / MAIN 5.05, has nss packages installed that are affected by
multiple vulnerabilities:

  - Empty or malformed p256-ECDH public keys may trigger a
    segmentation fault due values being improperly sanitized
    before being copied into memory and used. This
    vulnerability affects Firefox ESR &lt; 60.8, Firefox &lt; 68,
    and Thunderbird &lt; 60.8. (CVE-2019-11729)

  - When encrypting with a block cipher, if a call to
    NSC_EncryptUpdate was made with data smaller than the
    block size, a small out of bounds write could occur.
    This could have caused heap corruption and a potentially
    exploitable crash. This vulnerability affects
    Thunderbird &lt; 68.3, Firefox ESR &lt; 68.3, and Firefox &lt;
    71. (CVE-2019-11745)

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-2020-0005");
  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:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-11745");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/20");

  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 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 5.05" &&
    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);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" &gt;!&lt; cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.05": [
    "nss-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite",
    "nss-debuginfo-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite",
    "nss-devel-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite",
    "nss-pkcs11-devel-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite",
    "nss-sysinit-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite",
    "nss-tools-3.44.0-7.el7_7.cgslv5_5.0.2.ge9bba70.lite"
  ],
  "CGSL MAIN 5.05": [
    "nss-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0",
    "nss-debuginfo-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0",
    "nss-devel-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0",
    "nss-pkcs11-devel-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0",
    "nss-sysinit-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0",
    "nss-tools-3.44.0-7.el7_7.cgslv5_5.0.1.ga9fffa0"
  ]
};
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, "nss");
}