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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.ORACLELINUX_ELSA-2023-7255.NASL
HistoryNov 28, 2023 - 12:00 a.m.

Oracle Linux 9 : dotnet7.0 (ELSA-2023-7255)

2023-11-2800:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
7
oracle linux 9
security updates
dotnet7.0
elsa-2023-7255
.net
.net framework
visual studio
asp.net core
elevation of privilege
security feature bypass

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

6.8 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

45.1%

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7255 advisory.

  • .NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability (CVE-2023-36049)

  • ASP.NET Core - Security Feature Bypass Vulnerability (CVE-2023-36558)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2023-7255.
##

include('compat.inc');

if (description)
{
  script_id(186356);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/28");

  script_cve_id("CVE-2023-36049", "CVE-2023-36558");

  script_name(english:"Oracle Linux 9 : dotnet7.0 (ELSA-2023-7255)");

  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-2023-7255 advisory.

  - .NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability (CVE-2023-36049)

  - ASP.NET Core - Security Feature Bypass Vulnerability (CVE-2023-36558)

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-2023-7255.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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-36049");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/11/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:9::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:9::codeready_builder");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:aspnetcore-runtime-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:aspnetcore-targeting-pack-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-apphost-pack-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-hostfxr-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-runtime-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-sdk-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-sdk-7.0-source-built-artifacts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-targeting-pack-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dotnet-templates-7.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:netstandard-targeting-pack-2.1");
  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);

var pkgs = [
    {'reference':'aspnetcore-runtime-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'aspnetcore-targeting-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-apphost-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-host-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-hostfxr-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-runtime-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-sdk-7.0-7.0.114-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-sdk-7.0-source-built-artifacts-7.0.114-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-targeting-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-templates-7.0-7.0.114-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'netstandard-targeting-pack-2.1-7.0.114-1.0.1.el9_3', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'aspnetcore-runtime-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'aspnetcore-targeting-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-apphost-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-host-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-hostfxr-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-runtime-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-sdk-7.0-7.0.114-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-sdk-7.0-source-built-artifacts-7.0.114-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-targeting-pack-7.0-7.0.14-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dotnet-templates-7.0-7.0.114-1.0.1.el9_3', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'netstandard-targeting-pack-2.1-7.0.114-1.0.1.el9_3', '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, 'aspnetcore-runtime-7.0 / aspnetcore-targeting-pack-7.0 / dotnet-apphost-pack-7.0 / etc');
}
VendorProductVersionCPE
oraclelinux9cpe:/a:oracle:linux:9::appstream
oraclelinux9cpe:/a:oracle:linux:9::codeready_builder
oraclelinux9cpe:/o:oracle:linux:9
oraclelinuxaspnetcore-runtime-7.0p-cpe:/a:oracle:linux:aspnetcore-runtime-7.0
oraclelinuxaspnetcore-targeting-pack-7.0p-cpe:/a:oracle:linux:aspnetcore-targeting-pack-7.0
oraclelinuxdotnet-apphost-pack-7.0p-cpe:/a:oracle:linux:dotnet-apphost-pack-7.0
oraclelinuxdotnet-hostp-cpe:/a:oracle:linux:dotnet-host
oraclelinuxdotnet-hostfxr-7.0p-cpe:/a:oracle:linux:dotnet-hostfxr-7.0
oraclelinuxdotnet-runtime-7.0p-cpe:/a:oracle:linux:dotnet-runtime-7.0
oraclelinuxdotnet-sdk-7.0p-cpe:/a:oracle:linux:dotnet-sdk-7.0
Rows per page:
1-10 of 141

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

6.8 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

45.1%