NewStart CGSL CORE 5.04 / MAIN 5.04 : procps-ng Multiple Vulnerabilities (NS-SA-2019-0019)

#%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-2019-0019. The text
# itself is copyright (C) ZTE, Inc.

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(127175);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2018-1124", "CVE-2018-1126");

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : procps-ng Multiple Vulnerabilities (NS-SA-2019-0019)");

  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 procps-ng packages installed that are affected
by multiple vulnerabilities:

  - Multiple integer overflows leading to heap corruption
    flaws were discovered in file2strvec(). These
    vulnerabilities can lead to privilege escalation for a
    local attacker who can create entries in procfs by
    starting processes, which will lead to crashes or
    arbitrary code execution in proc utilities run by other
    users (eg pgrep, pkill, pidof, w). (CVE-2018-1124)

  - A flaw was found where procps-ng provides wrappers for
    standard C allocators that took `unsigned int` instead
    of `size_t` parameters. On platforms where these differ
    (such as x86_64), this could cause integer truncation,
    leading to undersized regions being returned to callers
    that could then be overflowed. The only known
    exploitable vector for this issue is CVE-2018-1124.
    (CVE-2018-1126)

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-2019-0019");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL procps-ng 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1126");
  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:"2018/05/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");

  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": [
    "procps-ng-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-debuginfo-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-devel-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-i18n-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e"
  ],
  "CGSL MAIN 5.04": [
    "procps-ng-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-debuginfo-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-devel-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e",
    "procps-ng-i18n-3.3.10-17.el7_5.2.cgslv5.0.3.gada764e"
  ]
};
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, "procps-ng");
}