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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2024-2275-1.NASL
HistoryJul 03, 2024 - 12:00 a.m.

SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2024:2275-1)

2024-07-0300:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
2
suse
linux
openssh
security update
vulnerability
sled15
sles15
opensuse 15
race condition
signal handler
suse-su-2024:2275-1
bsc#1226642
cve-2024-6387

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

29.7%

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:2275-1 advisory.

- CVE-2024-6387: Fixed race condition in a signal handler (bsc#1226642)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2024:2275-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(201328);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/05");

  script_cve_id("CVE-2024-6387");
  script_xref(name:"SuSE", value:"SUSE-SU-2024:2275-1");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2024:2275-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a
vulnerability as referenced in the SUSE-SU-2024:2275-1 advisory.

    - CVE-2024-6387: Fixed race condition in a signal handler (bsc#1226642)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1226642");
  # https://lists.suse.com/pipermail/sle-security-updates/2024-July/018851.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1f35753f");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2024-6387");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-6387");

  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:"2024/06/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-server-config-disallow-rootlogin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  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) 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, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15', 'SUSE (' + os_ver + ')');

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, 'SUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(6)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP6", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(6)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP6", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(6)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP6", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(6)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP6", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'openssh-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-askpass-gnome-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-askpass-gnome-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-clients-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-clients-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-common-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-common-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-fips-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-fips-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-helpers-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-helpers-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-server-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-server-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-server-config-disallow-rootlogin-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-server-config-disallow-rootlogin-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-15.6']},
    {'reference':'openssh-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-askpass-gnome-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-desktop-applications-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-askpass-gnome-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-desktop-applications-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-clients-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-clients-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-common-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-common-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-fips-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-fips-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-helpers-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-helpers-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-server-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-server-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-server-config-disallow-rootlogin-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']},
    {'reference':'openssh-server-config-disallow-rootlogin-9.6p1-150600.6.3.1', 'sp':'6', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-15.6', 'sle-module-basesystem-release-15.6', 'sled-release-15.6', 'sles-release-15.6']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = 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['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, 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, 'openssh / openssh-askpass-gnome / openssh-clients / openssh-common / etc');
}
VendorProductVersionCPE
novellsuse_linuxopenssh-serverp-cpe:/a:novell:suse_linux:openssh-server
novellsuse_linuxopenssh-helpersp-cpe:/a:novell:suse_linux:openssh-helpers
novellsuse_linuxopenssh-clientsp-cpe:/a:novell:suse_linux:openssh-clients
novellsuse_linuxopenssh-commonp-cpe:/a:novell:suse_linux:openssh-common
novellsuse_linuxopensshp-cpe:/a:novell:suse_linux:openssh
novellsuse_linuxopenssh-fipsp-cpe:/a:novell:suse_linux:openssh-fips
novellsuse_linuxopenssh-askpass-gnomep-cpe:/a:novell:suse_linux:openssh-askpass-gnome
novellsuse_linuxopenssh-server-config-disallow-rootloginp-cpe:/a:novell:suse_linux:openssh-server-config-disallow-rootlogin
novellsuse_linux15cpe:/o:novell:suse_linux:15

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

29.7%