EulerOS 2.0 SP3 : http-parser (EulerOS-SA-2019-2238)

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

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

if (description)
{
  script_id(130700);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id(
    "CVE-2018-12121",
    "CVE-2018-7159"
  );

  script_name(english:"EulerOS 2.0 SP3 : http-parser (EulerOS-SA-2019-2238)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the http-parser package installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - The HTTP parser in all current versions of Node.js
    ignores spaces in the `Content-Length` header, allowing
    input such as `Content-Length: 1 2` to be interpreted
    as having a value of `12`. The HTTP specification does
    not allow for spaces in the `Content-Length` value and
    the Node.js HTTP parser has been brought into line on
    this particular difference. The security risk of this
    flaw to Node.js users is considered to be VERY LOW as
    it is difficult, and may be impossible, to craft an
    attack that makes use of this flaw in a way that could
    not already be achieved by supplying an incorrect value
    for `Content-Length`. Vulnerabilities may exist in
    user-code that make incorrect assumptions about the
    potential accuracy of this value compared to the actual
    length of the data supplied. Node.js users crafting
    lower-level HTTP utilities are advised to re-check the
    length of any input supplied after parsing is
    complete.(CVE-2018-7159)

  - Node.js: All versions prior to Node.js 6.15.0, 8.14.0,
    10.14.0 and 11.3.0: Denial of Service with large HTTP
    headers: By using a combination of many requests with
    maximum sized headers (almost 80 KB per connection),
    and carefully timed completion of the headers, it is
    possible to cause the HTTP server to abort from heap
    allocation failure. Attack potential is mitigated by
    the use of a load balancer or other proxy
    layer.(CVE-2018-12121)

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-2019-2238
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8eba8e63");
  script_set_attribute(attribute:"solution", value:
"Update the affected http-parser packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:N/UI:N/S:U/C:N/I:L/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-2018-7159");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:http-parser");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei 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/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 !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["http-parser-2.7.1-1.h2"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"3", 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, "http-parser");
}