Debian dsa-6252 : prosody - 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-6252. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(313163);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/07");

  script_cve_id(
    "CVE-2026-43504",
    "CVE-2026-43505",
    "CVE-2026-43506",
    "CVE-2026-43507"
  );

  script_name(english:"Debian dsa-6252 : prosody - 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 12 / 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the
dsa-6252 advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6252-1                   [email protected]
    https://www.debian.org/security/                       Moritz Muehlenhoff
    May 07, 2026                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : prosody
    CVE ID         : CVE-2026-43504 CVE-2026-43505 CVE-2026-43506
                     CVE-2026-43507

    Multiple security issues were found in Prosody, a lightweight
    Jabber/XMPP server, which could result in denial of service or
    insufficient access control when using the SOCKS5 proxy module.

    For the oldstable distribution (bookworm), these problems have been fixed
    in version 0.12.3-1+deb12u1.

    For the stable distribution (trixie), these problems have been fixed in
    version 13.0.1-1+deb131u.

    We recommend that you upgrade your prosody packages.

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

    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/prosody");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43504");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43505");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43506");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43507");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/prosody");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/prosody");
  script_set_attribute(attribute:"solution", value:
"Upgrade the prosody packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:N/I:N/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-2026-43507");

  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:"2026/05/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:prosody");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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:"^(12)\.[0-9]+|^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0 / 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': '12.0', 'prefix': 'prosody', 'reference': '0.12.3-1+deb12u1'},
    {'release': '13.0', 'prefix': 'prosody', 'reference': '13.0.1-1+deb131u'}
];

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, 'prosody');
}