EulerOS 2.0 SP8 : php (EulerOS-SA-2021-2810)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(156313);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/22");

  script_cve_id("CVE-2021-21703");
  script_xref(name:"IAVA", value:"2021-A-0503-S");

  script_name(english:"EulerOS 2.0 SP8 : php (EulerOS-SA-2021-2810)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the php packages installed, the EulerOS installation on the remote host is affected by the
following vulnerabilities :

  - In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running
    PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-
    privileged users, it is possible for the child processes to access memory shared with the main process and
    write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and
    writes, which can be used to escalate privileges from local unprivileged user to the root user.
    (CVE-2021-21703)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security
advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional
issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2810
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4ce38b82");
  script_set_attribute(attribute:"solution", value:
"Update the affected php packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/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-2021-21703");

  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:"2021/10/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/12/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-cli");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-fpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-gd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-odbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-pdo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-process");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-recode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-soap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:php-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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);

var release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(8)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "php-7.2.10-1.h24.eulerosv2r8",
  "php-cli-7.2.10-1.h24.eulerosv2r8",
  "php-common-7.2.10-1.h24.eulerosv2r8",
  "php-fpm-7.2.10-1.h24.eulerosv2r8",
  "php-gd-7.2.10-1.h24.eulerosv2r8",
  "php-ldap-7.2.10-1.h24.eulerosv2r8",
  "php-odbc-7.2.10-1.h24.eulerosv2r8",
  "php-pdo-7.2.10-1.h24.eulerosv2r8",
  "php-process-7.2.10-1.h24.eulerosv2r8",
  "php-recode-7.2.10-1.h24.eulerosv2r8",
  "php-soap-7.2.10-1.h24.eulerosv2r8",
  "php-xml-7.2.10-1.h24.eulerosv2r8",
  "php-xmlrpc-7.2.10-1.h24.eulerosv2r8"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"8", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "php");
}