Debian dsa-5827 : proftpd-basic - 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-5827. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(212267);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/12/10");

  script_cve_id("CVE-2024-48651");

  script_name(english:"Debian dsa-5827 : proftpd-basic - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5827
advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-5827-1                   [email protected]
    https://www.debian.org/security/                     Salvatore Bonaccorso
    December 10, 2024                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : proftpd-dfsg
    CVE ID         : CVE-2024-48651
    Debian Bug     : 1082326

    Brian Ristuccia discovered that in ProFTPD, a powerful modular
    FTP/SFTP/FTPS server, supplemental group inheritance grants unintended
    access to GID 0 because of the lack of supplemental groups from mod_sql.

    For the stable distribution (bookworm), this problem has been fixed in
    version 1.3.8+dfsg-4+deb12u4.

    We recommend that you upgrade your proftpd-dfsg packages.

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

    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 this issue but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/proftpd-dfsg
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a98522a3");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-48651");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/proftpd-dfsg");
  script_set_attribute(attribute:"solution", value:
"Upgrade the proftpd-basic packages.");
  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: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-2024-48651");

  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:"2024/11/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/12/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/12/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-basic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-crypto");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-geoip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-odbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-sqlite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:proftpd-mod-wrap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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) 2024 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]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0', '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': 'proftpd-basic', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-core', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-dev', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-doc', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-crypto', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-geoip', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-ldap', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-mysql', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-odbc', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-pgsql', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-snmp', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-sqlite', 'reference': '1.3.8+dfsg-4+deb12u4'},
    {'release': '12.0', 'prefix': 'proftpd-mod-wrap', 'reference': '1.3.8+dfsg-4+deb12u4'}
];

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, 'proftpd-basic / proftpd-core / proftpd-dev / proftpd-doc / etc');
}