Oracle Linux 9 : istio (ELSA-2023-12771)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2023-12771.
##

include('compat.inc');

if (description)
{
  script_id(181551);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/18");

  script_cve_id(
    "CVE-2023-35941",
    "CVE-2023-35942",
    "CVE-2023-35943",
    "CVE-2023-35944"
  );

  script_name(english:"Oracle Linux 9 : istio (ELSA-2023-12771)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2023-12771 advisory.

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions
    1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the
    `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0,
    1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the
    `origin` header in the Envoy configuration. (CVE-2023-35943)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-
    case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0,
    1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes
    such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections.
    With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme
    values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive.
    There are no known workarounds for this issue. (CVE-2023-35944)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions
    1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with
    permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC
    payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and
    1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's
    domain configuration. (CVE-2023-35941)

  - Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions
    1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause
    a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and
    1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.
    (CVE-2023-35942)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2023-12771.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2023-35941");

  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:"2023/07/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/09/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:9::olcne17");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:istio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:istio-istioctl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-api-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-calico-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-gluster-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-grafana-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-istio-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-kubevirt-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-metallb-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-multus-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-nginx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-oci-ccm-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-olm-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-prometheus-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-rook-chart");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcne-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:olcnectl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:virtctl");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 9', 'Oracle Linux ' + os_ver);

if (!get_kb_item('Host/RedHat/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, 'Oracle Linux', cpu);
if ('x86_64' >!< cpu) audit(AUDIT_ARCH_NOT, 'x86_64', cpu);

var pkgs = [
    {'reference':'istio-1.17.5-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'istio-istioctl-1.17.5-1.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-agent-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-api-server-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-calico-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-gluster-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-grafana-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-istio-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-kubevirt-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-metallb-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-multus-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-nginx-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-oci-ccm-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-olm-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-prometheus-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-rook-chart-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcne-utils-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'olcnectl-1.7.2-2.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'virtctl-0.58.0-3.el9', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (rpm_exists(release:_release, rpm:exists_check) && rpm_check(release:_release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    } else {
        if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      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, 'istio / istio-istioctl / olcne-agent / etc');
}