EulerOS 2.0 SP1 : python (EulerOS-SA-2018-1078)

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

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

if (description)
{
  script_id(109476);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id(
    "CVE-2018-1000030"
  );

  script_name(english:"EulerOS 2.0 SP1 : python (EulerOS-SA-2018-1078)");
  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 python packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerability :

  - python 2.7.14 is vulnerable to a Heap-Buffer-Overflow
    as well as a Heap-Use-After-Free. Python versions prior
    to 2.7.14 may also be vulnerable and it appears that
    Python 2.7.17 and prior may also be vulnerable however
    this has not been confirmed. The vulnerability lies
    when multiply threads are handling large amounts of
    data. In both cases there is essentially a race
    condition that occurs. For the Heap-Buffer-Overflow,
    Thread 2 is creating the size for a buffer, but Thread1
    is already writing to the buffer without knowing how
    much to write. So when a large amount of data is being
    processed, it is very easy to cause memory corruption
    using a Heap-Buffer-Overflow. As for the
    Use-After-Free,
    Thread3-i1/4zMalloc-i1/4zThread1-i1/4zFree's-i1/4zThread2-Re-us
    es-Free'd Memory. The PSRT has stated that this is not
    a security vulnerability due to the fact that the
    attacker must be able to run code, however in some
    situations, such as function as a service, this
    vulnerability can potentially be used by an attacker to
    violate a trust boundary, as such the DWF feels this
    issue deserves a CVE.(CVE-2018-1000030)

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-2018-1078
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?484eb2f8");
  script_set_attribute(attribute:"solution", value:
"Update the affected python package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-libs");
  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) 2018-2021 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 !~ "^(1)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP1");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP1", "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 = ["python-2.7.5-58.h7",
        "python-devel-2.7.5-58.h7",
        "python-libs-2.7.5-58.h7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"1", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    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, "python");
}