EulerOS 2.0 SP8 : tomcat (EulerOS-SA-2020-2324)

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

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

if (description)
{
  script_id(142170);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id(
    "CVE-2020-13943"
  );
  script_xref(name:"IAVA", value:"2020-A-0465-S");

  script_name(english:"EulerOS 2.0 SP8 : tomcat (EulerOS-SA-2020-2324)");
  script_summary(english:"Checks the rpm output for the updated package.");

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

  - If an HTTP/2 client connecting to Apache Tomcat
    10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to
    8.5.57 exceeded the agreed maximum number of concurrent
    streams for a connection (in violation of the HTTP/2
    protocol), it was possible that a subsequent request
    made on that connection could contain HTTP headers -
    including HTTP/2 pseudo headers - from a previous
    request rather than the intended headers. This could
    lead to users seeing responses for unexpected
    resources.(CVE-2020-13943)

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-2020-2324
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?13e84c10");
  script_set_attribute(attribute:"solution", value:
"Update the affected tomcat package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:N/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:L/PR:L/UI:N/S:U/C:L/I:N/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-2020-13943");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-admin-webapps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-el-3.0-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-jsp-2.3-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:tomcat-servlet-4.0-api");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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) 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/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);

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

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

uvp = get_kb_item("Host/EulerOS/uvp_version");
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);

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);

flag = 0;

pkgs = ["tomcat-9.0.10-1.h10.eulerosv2r8",
        "tomcat-admin-webapps-9.0.10-1.h10.eulerosv2r8",
        "tomcat-el-3.0-api-9.0.10-1.h10.eulerosv2r8",
        "tomcat-jsp-2.3-api-9.0.10-1.h10.eulerosv2r8",
        "tomcat-lib-9.0.10-1.h10.eulerosv2r8",
        "tomcat-servlet-4.0-api-9.0.10-1.h10.eulerosv2r8"];

foreach (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
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "tomcat");
}