EulerOS 2.0 SP3 : yum-utils (EulerOS-SA-2018-1320)

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

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

if (description)
{
  script_id(117763);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/03");

  script_cve_id("CVE-2018-10897");

  script_name(english:"EulerOS 2.0 SP3 : yum-utils (EulerOS-SA-2018-1320)");

  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 yum-utils packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerability :

  - yum-utils: reposync: improper path validation may lead
    to directory traversal (CVE-2018-10897)

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-2018-1320
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1d053134");
  script_set_attribute(attribute:"solution", value:
"Update the affected yum-utils package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-10897");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-aliases");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-changelog");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-priorities");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-tmprepo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-verify");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-plugin-versionlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:yum-utils");
  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) 2018-2022 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 = ["yum-plugin-aliases-1.1.31-34.h1",
        "yum-plugin-changelog-1.1.31-34.h1",
        "yum-plugin-priorities-1.1.31-34.h1",
        "yum-plugin-tmprepo-1.1.31-34.h1",
        "yum-plugin-verify-1.1.31-34.h1",
        "yum-plugin-versionlock-1.1.31-34.h1",
        "yum-utils-1.1.31-34.h1"];

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_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, "yum-utils");
}