openSUSE 16 Security Update : dovecot24 (openSUSE-SU-2026:20554-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2026:20554-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(309138);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/01");

  script_cve_id(
    "CVE-2025-59028",
    "CVE-2025-59031",
    "CVE-2025-59032",
    "CVE-2026-24031",
    "CVE-2026-27855",
    "CVE-2026-27856",
    "CVE-2026-27857",
    "CVE-2026-27858",
    "CVE-2026-27859",
    "CVE-2026-27860"
  );

  script_name(english:"openSUSE 16 Security Update : dovecot24 (openSUSE-SU-2026:20554-1)");

  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-2026:20554-1 advisory.

    - Update to v2.4.3
    - CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).
    - CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during
    indexing
      (bsc#1260895).
    - CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).
    - CVE-2026-24031: SQL injection possible if auth_username_chars is configured empty. Fixed escaping to
    always happen.
      v2.4 regression (bsc#1260896).
    - CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).
    - CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).
    - CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).
    - CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication
    (bsc#1260901).
    - CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).
    - CVE-2026-27860: LDAP query injection possible if auth_username_chars is configured empty. Fixed escaping
    to always
      happen. v2.4 regression (bsc#1260893).

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/1260893");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260894");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260895");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260896");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260897");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260898");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260899");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260900");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260901");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260902");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2025-59028");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2025-59031");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2025-59032");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-24031");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27855");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27856");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27857");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27858");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27859");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2026-27860");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:C/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:L/I:H/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-2026-24031");

  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:"2026/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/22");

  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':'dovecot24-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-mysql-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-pgsql-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-backend-sqlite-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-devel-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-flatcurve-2.4.3-160000.1.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'dovecot24-fts-solr-2.4.3-160000.1.1', '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');
}