openSUSE 15 Security Update : exim (openSUSE-SU-2024:0007-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2024:0007-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(187650);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/19");

  script_cve_id(
    "CVE-2022-3559",
    "CVE-2023-42114",
    "CVE-2023-42115",
    "CVE-2023-42116",
    "CVE-2023-42117",
    "CVE-2023-42119",
    "CVE-2023-51766"
  );
  script_xref(name:"IAVA", value:"2022-A-0338-S");
  script_xref(name:"IAVA", value:"2023-A-0521-S");
  script_xref(name:"IAVA", value:"2024-A-0002-S");

  script_name(english:"openSUSE 15 Security Update : exim (openSUSE-SU-2024:0007-1)");

  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 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the
openSUSE-SU-2024:0007-1 advisory.

  - A vulnerability was found in Exim and classified as problematic. This issue affects some unknown
    processing of the component Regex Handler. The manipulation leads to use after free. The name of the patch
    is 4e9ed49f8f12eb331b29bd5b6dc3693c520fddc2. It is recommended to apply a patch to fix this issue. The
    identifier VDB-211073 was assigned to this vulnerability. (CVE-2022-3559)

  - NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42114)

  - AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability [epel-all] (CVE-2023-42115)

  - Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability (CVE-2023-42116,
    CVE-2023-42117)

  - dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability [epel-all] (CVE-2023-42119)

  - Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers
    can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address,
    allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some
    other popular e-mail servers do not. (CVE-2023-51766)

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/1218387");
  # https://lists.opensuse.org/archives/list/[email protected]/thread/HHLYW3QLWRHGQXVXSQUL2DBTCFFCJGNB/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?52413d4f");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-3559");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-42114");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-42115");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-42116");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-42117");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-42119");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-51766");
  script_set_attribute(attribute:"solution", value:
"Update the affected exim, eximon and / or eximstats-html packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  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:N/UI:N/S:U/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-2023-51766");

  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:"2022/08/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:exim");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:eximon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:eximstats-html");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.5");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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/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 !~ "^(SUSE15\.5)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '15.5', 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':'exim-4.97.1-bp155.5.9.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'eximon-4.97.1-bp155.5.9.1', 'release':'SUSE15.5', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'eximstats-html-4.97.1-bp155.5.9.1', 'release':'SUSE15.5', '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_WARNING,
      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, 'exim / eximon / eximstats-html');
}