Debian dla-3860 : dovecot-auth-lua - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3860. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(206419);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/11");

  script_cve_id("CVE-2024-23184", "CVE-2024-23185");

  script_name(english:"Debian dla-3860 : dovecot-auth-lua - 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
dla-3860 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-3860-1                [email protected]
    https://www.debian.org/lts/security/                       Guilhem Moulin
    September 02, 2024                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : dovecot
    Version        : 1:2.3.13+dfsg1-2+deb11u2
    CVE ID         : CVE-2024-23184 CVE-2024-23185
    Debian Bug     : 1078876 1078877

    Vulnerabilities were discovered in dovecot, an POP3/IMAP server, which
    could lead to Denial of Service.

    CVE-2024-23184

        Having a large number of address headers (From, To, Cc, Bcc, etc.)
        becomes excessively CPU intensive.

    CVE-2024-23185

        Very large headers can cause resource exhaustion when parsing
        message.

    For Debian 11 bullseye, these problems have been fixed in version
    1:2.3.13+dfsg1-2+deb11u2.

    We recommend that you upgrade your dovecot packages.

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

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    Attachment:
    signature.asc
    Description: PGP signature

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/dovecot");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-23184");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-23185");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/dovecot");
  script_set_attribute(attribute:"solution", value:
"Upgrade the dovecot-auth-lua packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-23184");

  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:"2024/08/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/09/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/09/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-auth-lua");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-imapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-lmtpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-lucene");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-managesieved");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-pop3d");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-sieve");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-solr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-sqlite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-submissiond");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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:"^(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': 'dovecot-auth-lua', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-core', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-dev', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-gssapi', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-imapd', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-ldap', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-lmtpd', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-lucene', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-managesieved', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-mysql', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-pgsql', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-pop3d', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-sieve', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-solr', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-sqlite', 'reference': '1:2.3.13+dfsg1-2+deb11u2'},
    {'release': '11.0', 'prefix': 'dovecot-submissiond', 'reference': '1:2.3.13+dfsg1-2+deb11u2'}
];

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, 'dovecot-auth-lua / dovecot-core / dovecot-dev / dovecot-gssapi / etc');
}