RHEL 6 : tomcat (Unpatched Vulnerability)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory tomcat. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(195432);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/13");

  script_cve_id(
    "CVE-2017-12616",
    "CVE-2019-0221",
    "CVE-2019-12418",
    "CVE-2019-17563",
    "CVE-2020-1935",
    "CVE-2020-13943",
    "CVE-2021-25329",
    "CVE-2022-23181",
    "CVE-2022-25762",
    "CVE-2022-29885",
    "CVE-2022-45143",
    "CVE-2023-28708",
    "CVE-2023-28709",
    "CVE-2023-34981",
    "CVE-2023-42794"
  );
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"RHEL 6 : tomcat (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - tomcat: request mixup (CVE-2022-25762)

  - When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security
    constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a
    specially crafted request. (CVE-2017-12616)

  - The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes
    user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The
    printenv command is intended for debugging and is unlikely to be present in a production website.
    (CVE-2019-0221)

  - When Apache Tomcat 9.0.0.M1 to 9.0.28, 8.5.0 to 8.5.47, 7.0.0 and 7.0.97 is configured with the JMX Remote
    Lifecycle Listener, a local attacker without access to the Tomcat process or configuration files is able
    to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords
    used to access the JMX interface. The attacker can then use these credentials to access the JMX interface
    and gain complete control over the Tomcat instance. (CVE-2019-12418)

  - When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98
    there was a narrow window where an attacker could perform a session fixation attack. The window was
    considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has
    been treated as a security vulnerability. (CVE-2019-17563)

  - If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to
    8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the
    HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP
    headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This
    could lead to users seeing responses for unexpected resources. (CVE-2020-13943)

  - In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used
    an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led
    to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly
    handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered
    unlikely. (CVE-2020-1935)

  - The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to
    9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be
    used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published
    prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to
    this issue. (CVE-2021-25329)

  - The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat
    10.1.0-M1 to 10.1.0-M8, 10.0.0-M5 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local
    attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue
    is only exploitable when Tomcat is configured to persist sessions using the FileStore. (CVE-2022-23181)

  - The documentation of Apache Tomcat 10.1.0-M1 to 10.1.0-M14, 10.0.0-M1 to 10.0.20, 9.0.13 to 9.0.62 and
    8.5.38 to 8.5.78 for the EncryptInterceptor incorrectly stated it enabled Tomcat clustering to run over an
    untrusted network. This was not correct. While the EncryptInterceptor does provide confidentiality and
    integrity protection, it does not protect against all risks associated with running over any untrusted
    network, particularly DoS risks. (CVE-2022-29885)

  - The JsonErrorReportValve in Apache Tomcat 8.5.83, 9.0.40 to 9.0.68 and 10.1.0-M1 to 10.1.1 did not escape
    the type, message or description values. In some circumstances these are constructed from user provided
    data and it was therefore possible for users to supply values that invalidated or manipulated the JSON
    output. (CVE-2022-45143)

  - When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the
    X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11.0.0-M1 to 11.0.0.-M2,
    10.1.0-M1 to 10.1.5, 9.0.0-M1 to 9.0.71 and 8.5.0 to 8.5.85 did not include the secure attribute. This
    could result in the user agent transmitting the session cookie over an insecure channel. (CVE-2023-28708)

  - The fix for CVE-2023-24998 was incomplete for Apache Tomcat 11.0.0-M2 to 11.0.0-M4, 10.1.5 to 10.1.7,
    9.0.71 to 9.0.73 and 8.5.85 to 8.5.87. If non-default HTTP connector settings were used such that the
    maxParameterCount could be reached using query string parameters and a request was submitted that supplied
    exactly maxParameterCount parameters in the query string, the limit for uploaded request parts could be
    bypassed with the potential for a denial of service to occur. (CVE-2023-28709)

  - A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if
    a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response
    which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the
    previous request leading to an information leak. (CVE-2023-34981)

  - Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged with
    Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased, in progress
    refactoring that exposed a potential denial of service on Windows if a web application opened a stream for
    an uploaded file but failed to close the stream. The file would never be deleted from disk creating the
    possibility of an eventual denial of service due to the disk being full. Users are recommended to upgrade
    to version 9.0.81 onwards or 8.5.94 onwards, which fixes the issue. (CVE-2023-42794)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
  script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-25762");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"d2_elliot_name", value:"Apache Tomcat VirtualDirContext Class File Handling Remote JSP Source Code Disclosure");
  script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pki-servlet-engine");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:tomcat6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '6')) audit(AUDIT_OS_NOT, 'Red Hat 6.x', 'Red Hat ' + 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$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
  {
    'pkgs': [
      {'reference':'tomcat', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'tomcat', 'cves':['CVE-2023-42794']},
      {'reference':'tomcat6', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'tomcat6', 'cves':['CVE-2017-12616', 'CVE-2019-0221', 'CVE-2019-12418', 'CVE-2019-17563', 'CVE-2020-1935', 'CVE-2020-13943', 'CVE-2021-25329', 'CVE-2022-23181', 'CVE-2022-25762', 'CVE-2022-29885', 'CVE-2022-45143', 'CVE-2023-28708', 'CVE-2023-28709', 'CVE-2023-34981']}
    ]
  }
];


var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
  foreach var pkg ( constraint_array['pkgs'] ) {
    var unpatched_pkg = NULL;
    var _release = NULL;
    var sp = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (unpatched_pkg &&
        _release &&
        (!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
        unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : unpatched_packages_report()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'tomcat / tomcat6');
}