Debian dsa-6231 : openjdk-21-dbg - 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-6231. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(310561);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/27");

  script_cve_id(
    "CVE-2026-22007",
    "CVE-2026-22013",
    "CVE-2026-22016",
    "CVE-2026-22018",
    "CVE-2026-22021",
    "CVE-2026-34268",
    "CVE-2026-34282"
  );

  script_name(english:"Debian dsa-6231 : openjdk-21-dbg - 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 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-6231 advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6231-1                   [email protected]
    https://www.debian.org/security/                       Moritz Muehlenhoff
    April 27, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : openjdk-21
    CVE ID         : CVE-2026-22007 CVE-2026-22013 CVE-2026-22016 CVE-2026-22018
                     CVE-2026-22021 CVE-2026-34268 CVE-2026-34282

    Several vulnerabilities have been discovered in the OpenJDK Java runtime,
    which may result in incorrect generation of cryptographic keys, denial
    of service, information disclosure, XEE/XEE attacks or incorrect
    validation of Kerberos credentials.

    For the stable distribution (trixie), these problems have been fixed in
    version 21.0.11+10-1~deb13u2.

    We recommend that you upgrade your openjdk-21 packages.

    For the detailed security status of openjdk-21 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/openjdk-21

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian 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://security-tracker.debian.org/tracker/source-package/openjdk-21");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22007");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22013");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22016");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22018");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22021");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-34268");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-34282");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/openjdk-21");
  script_set_attribute(attribute:"solution", value:
"Upgrade the openjdk-21-dbg packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-22016");

  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:"2026/04/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-demo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-jdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-jdk-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-jre");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-jre-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-jre-zero");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openjdk-21-testsupport");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 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:"^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 13.0', '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': '13.0', 'prefix': 'openjdk-21-dbg', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-demo', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-doc', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-jdk', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-jdk-headless', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-jre', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-jre-headless', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-jre-zero', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-source', 'reference': '21.0.11+10-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openjdk-21-testsupport', 'reference': '21.0.11+10-1~deb13u2'}
];

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_HOLE,
    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, 'openjdk-21-dbg / openjdk-21-demo / openjdk-21-doc / openjdk-21-jdk / etc');
}