Debian DSA-5265-1 : tomcat9 - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-5265. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(166706);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/06");

  script_cve_id(
    "CVE-2020-9484",
    "CVE-2021-43980",
    "CVE-2022-23181",
    "CVE-2022-29885"
  );
  script_xref(name:"IAVA", value:"2020-A-0225-S");
  script_xref(name:"IAVA", value:"2022-A-0222-S");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"Debian DSA-5265-1 : tomcat9 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-5265 advisory.

  - When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to
    7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the
    server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is
    configured with sessionAttributeValueClassNameFilter=null (the default unless a SecurityManager is used)
    or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker
    knows the relative file path from the storage location used by FileStore to the file the attacker has
    control over; then, using a specifically crafted request, the attacker will be able to trigger remote code
    execution via deserialization of the file under their control. Note that all of conditions a) to d) must
    be true for the attack to succeed. (CVE-2020-9484)

  - The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to
    Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache
    Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause
    client connections to share an Http11Processor instance resulting in responses, or part responses, to be
    received by the wrong client. (CVE-2021-43980)

  - 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)

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://security-tracker.debian.org/tracker/source-package/tomcat9");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2022/dsa-5265");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-9484");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-43980");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-23181");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-29885");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/tomcat9");
  script_set_attribute(attribute:"solution", value:
"Upgrade the tomcat9 packages.

For the stable distribution (bullseye), these problems have been fixed in version 9.0.43-2~deb11u4.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/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:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-9484");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-23181");

  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:"2020/05/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtomcat9-embed-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtomcat9-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat9-user");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian 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/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
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, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'libtomcat9-embed-java', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'libtomcat9-java', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9-admin', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9-common', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9-docs', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9-examples', 'reference': '9.0.43-2~deb11u4'},
    {'release': '11.0', 'prefix': 'tomcat9-user', 'reference': '9.0.43-2~deb11u4'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libtomcat9-embed-java / libtomcat9-java / tomcat9 / tomcat9-admin / etc');
}