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nessusUbuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-6908-1.NASL
HistoryJul 23, 2024 - 12:00 a.m.

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Tomcat vulnerabilities (USN-6908-1)

2024-07-2300:00:00
Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
8
ubuntu
tomcat
vulnerabilities
usn-6908-1
xss
cve-2019-0221
remote
execution
arbitrary code
cve-2020-9484
cve-2021-25329

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.1

Confidence

High

EPSS

0.914

Percentile

99.0%

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6908-1 advisory.

It was discovered that the Tomcat SSI printenv command echoed user provided data without escaping it. An     attacker could possibly use this issue to perform an XSS attack. (CVE-2019-0221)

It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore     configurations. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484,     CVE-2021-25329)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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 Ubuntu Security Notice USN-6908-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(203145);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id("CVE-2019-0221", "CVE-2020-9484", "CVE-2021-25329");
  script_xref(name:"IAVA", value:"2020-A-0225-S");
  script_xref(name:"IAVA", value:"2021-A-0114-S");
  script_xref(name:"IAVB", value:"2019-B-0048-S");
  script_xref(name:"USN", value:"6908-1");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Tomcat vulnerabilities (USN-6908-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-6908-1 advisory.

    It was discovered that the Tomcat SSI printenv command echoed user provided data without escaping it. An
    attacker could possibly use this issue to perform an XSS attack. (CVE-2019-0221)

    It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore
    configurations. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484,
    CVE-2021-25329)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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://ubuntu.com/security/notices/USN-6908-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-25329");

  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:"2019/04/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libservlet3.0-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtomcat7-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tomcat7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tomcat7-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tomcat7-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tomcat7-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:tomcat7-user");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release || '16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04 / 18.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '14.04', 'pkgname': 'libservlet3.0-java', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'libtomcat7-java', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'tomcat7', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'tomcat7-admin', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'tomcat7-common', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'tomcat7-examples', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '14.04', 'pkgname': 'tomcat7-user', 'pkgver': '7.0.52-1ubuntu0.16+esm1', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libservlet3.0-java', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'libtomcat7-java', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'tomcat7', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'tomcat7-admin', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'tomcat7-common', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'tomcat7-examples', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'tomcat7-user', 'pkgver': '7.0.68-1ubuntu0.4+esm2', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'libservlet3.0-java', 'pkgver': '7.0.78-1ubuntu0.1~esm1', 'ubuntu_pro': TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libservlet3.0-java / libtomcat7-java / tomcat7 / tomcat7-admin / etc');
}

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.1

Confidence

High

EPSS

0.914

Percentile

99.0%