openSUSE 16: dovecot24 / dovecot24-backend-mysql / dovecot24-backend-pgsql / etc (openSUSE-SU-2026:21720-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2026:21720-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(342588);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/03");

  script_cve_id(
    "CVE-2026-27852",
    "CVE-2026-33263",
    "CVE-2026-33604",
    "CVE-2026-33605",
    "CVE-2026-33606",
    "CVE-2026-33607",
    "CVE-2026-40013",
    "CVE-2026-40014",
    "CVE-2026-40015",
    "CVE-2026-40017",
    "CVE-2026-40018",
    "CVE-2026-40203",
    "CVE-2026-40204",
    "CVE-2026-40205",
    "CVE-2026-42007",
    "CVE-2026-42008",
    "CVE-2026-42391",
    "CVE-2026-42392",
    "CVE-2026-42393",
    "CVE-2026-42395",
    "CVE-2026-52681",
    "CVE-2026-52687",
    "CVE-2026-73208",
    "CVE-2026-73209"
  );

  script_name(english:"openSUSE 16: dovecot24 / dovecot24-backend-mysql / dovecot24-backend-pgsql / etc (openSUSE-SU-2026:21720-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the
openSUSE-SU-2026:21720-1 advisory.

    Update to 2.4.5.

    - CVE-2026-33263: `submission-login`: panic when `mail_max_userip_connections` is reached (bsc#1276794).
    - CVE-2026-27852: DoS by sending mail with bad header (bsc#1276799).
    - CVE-2026-33604: SMTP smuggling via missing dot-stuffing after bare carriage return (bsc#1276802).
    - CVE-2026-33605: `managesieve-login`: pre-auth crash (bsc#1276809).
    - CVE-2026-33606: `dsync`: mail content can cause `dsync` protocol injection (bsc#1276800).
    - CVE-2026-33607: IMAP `LIST` `match_sub()` exponential backtracking leading to CPU denial of service
    (bsc#1276795).
    - CVE-2026-40013: stack buffer underflow in `pigeonhole` `ManageSieve` `CHECKSCRIPT/PUTSCRIPT`
    (bsc#1276807).
    - CVE-2026-40014: CPU DoS via crafted references header (bsc#1276804).
    - CVE-2026-40015: `imap-hibernate` can be crashed (bsc#1276812).
    - CVE-2026-40017: CPU DoS via CRC32 hash collision in `strmap` (bsc#1276813).
    - CVE-2026-40018: MySQL multi-byte escaping performed incorrectly (bsc#1276810).
    - CVE-2026-40203: IMAP compression can reveal whether a small synced email body matches sender-chosen text
      (bsc#1276815).
    - CVE-2026-40204: `lda_mailbox_autocreate` can bypass ACL restrictions (bsc#1276819).
    - CVE-2026-40205: OAuth2 `passdb` scope enforcement bypass via OR semantics in remote validation path
    (bsc#1276820).
    - CVE-2026-42007: `sieve` `editheader` RCE (bsc#1276817).
    - CVE-2026-42008: `XCLIENT FORWARD= bare` token not namespaced (bsc#1276824).
    - CVE-2026-42391: `imap`: pre-login memory/CPU growth with `ID` command (bsc#1276835).
    - CVE-2026-42392: `imap-urlauth` leaks memory into user-visible error messages (bsc#1276829).
    - CVE-2026-42393: `doveadm_password` or api key length can be leaked with timing comparisons
    (bsc#1276827).
    - CVE-2026-52687: `imap`: `COMPRESS ZSTD` can cause excessive memory usage (bsc#1276837).
    - CVE-2026-42395: single NUL-byte `XCLIENT FORWARD` payload crashes (bsc#1276826).
    - CVE-2026-52681: `sieve` resource usage tracking lost when active script changes (bsc#1276828).
    - CVE-2026-73208: `auth`: `db-oauth2`: `aud` claim used as fallback for missing scope claim (bsc#1276830).
    - CVE-2026-73209: `imap-login` crash due to self-recursion on zero-output decompress chunks (bsc#1276833).

Tenable has extracted the preceding description block directly from the SUSE 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://bugzilla.suse.com/1276794");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276795");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276799");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276800");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276802");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276804");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276807");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276809");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276810");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276812");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276813");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276815");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276817");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276819");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276820");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276824");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276826");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276827");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276828");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276829");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276830");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276833");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276835");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1276837");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27852");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-33263");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-33604");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-33605");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-33606");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-33607");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40013");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40014");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40015");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40017");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40018");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40203");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40204");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-40205");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42007");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42008");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42391");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42392");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42393");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-42395");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-52681");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-52687");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-73208");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-73209");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/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:L/UI:N/S:C/C:L/I:L/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-2026-42007");

  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:"2026/08/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-backend-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-backend-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-backend-sqlite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-fts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-fts-flatcurve");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dovecot24-fts-solr");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:16.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/SuSE/release');
if (isnull(os_release) || os_release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var _os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:os_release);
if (isnull(_os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
_os_ver = _os_ver[1];
if (os_release !~ "^(SUSE16\.0)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '16.0', os_release);
if (!get_kb_item("Host/SuSE/rpm-list")) 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, 'openSUSE ' + _os_ver, cpu);

var pkgs = [
    {'reference':'dovecot24-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-mysql-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-pgsql-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-sqlite-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-devel-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-flatcurve-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-solr-2.4.4-160000.2.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var _cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (rpm_check(release:_release, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'dovecot24 / dovecot24-backend-mysql / dovecot24-backend-pgsql / etc');
}