EulerOS 2.0 SP8 : sane-backends (EulerOS-SA-2022-1587)

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

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

if (description)
{
  script_id(160165);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/31");

  script_cve_id("CVE-2020-12862", "CVE-2020-12863", "CVE-2020-12867");

  script_name(english:"EulerOS 2.0 SP8 : sane-backends (EulerOS-SA-2022-1587)");

  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 sane-backends packages installed, the EulerOS installation on the remote host is
affected by the following vulnerabilities :

  - An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same
    local network as the victim to read important information, such as the ASLR offsets of the program, aka
    GHSL-2020-082. (CVE-2020-12862)

  - An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same
    local network as the victim to read important information, such as the ASLR offsets of the program, aka
    GHSL-2020-083. (CVE-2020-12863)

  - A NULL pointer dereference in sanei_epson_net_read in SANE Backends before 1.0.30 allows a malicious
    device connected to the same local network as the victim to cause a denial of service, aka GHSL-2020-075.
    (CVE-2020-12867)

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-2022-1587
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?901174cd");
  script_set_attribute(attribute:"solution", value:
"Update the affected sane-backends packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-12863");

  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:"2020/06/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/04/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sane-backends");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sane-backends-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sane-backends-drivers-cameras");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sane-backends-drivers-scanners");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sane-backends-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2023 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/sp");
  script_exclude_keys("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 (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");

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

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);

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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "sane-backends-1.0.27-18.h3.eulerosv2r8",
  "sane-backends-devel-1.0.27-18.h3.eulerosv2r8",
  "sane-backends-drivers-cameras-1.0.27-18.h3.eulerosv2r8",
  "sane-backends-drivers-scanners-1.0.27-18.h3.eulerosv2r8",
  "sane-backends-libs-1.0.27-18.h3.eulerosv2r8"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"8", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    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, "sane-backends");
}