EulerOS Virtualization 3.0.2.0 : wayland (EulerOS-SA-2023-1710)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(175216);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/06/02");

  script_cve_id("CVE-2021-3782");

  script_name(english:"EulerOS Virtualization 3.0.2.0 : wayland (EulerOS-SA-2023-1710)");

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

  - An internal reference count is held on the buffer pool, incremented every time a new buffer is created
    from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference
    count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the
    server to create a large number of external references to the buffer storage. With the reference count
    overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may
    be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of
    server-side memory to the attacking client at a time. (CVE-2021-3782)

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-2023-1710
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1a6b1b58");
  script_set_attribute(attribute:"solution", value:
"Update the affected wayland packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:P/I:P/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:L/PR:L/UI:N/S:U/C:L/I:L/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-2021-3782");

  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:"2022/09/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/05/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwayland-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwayland-cursor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwayland-egl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwayland-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0");
  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) 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/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");

  exit(0);
}

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 (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0");
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 && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "libwayland-client-1.15.0-1.h1",
  "libwayland-cursor-1.15.0-1.h1",
  "libwayland-egl-1.15.0-1.h1",
  "libwayland-server-1.15.0-1.h1"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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, "wayland");
}