SUSE SLED15 / SLES15 Security Update : dbus-1 (SUSE-SU-2021:2292-1)

2021-07-13T00:00:00
ID SUSE_SU-2021-2292-1.NASL
Type nessus
Reporter This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2021-07-13T00:00:00

Description

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:2292-1 advisory.

  • A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors (CVE-2020-35512)

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 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2021:2292-1. The text itself
# is copyright (C) SUSE.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(151524);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/07/13");

  script_cve_id("CVE-2020-35512");
  script_xref(name:"SuSE", value:"SUSE-SU-2021:2292-1");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : dbus-1 (SUSE-SU-2021:2292-1)");

  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 / SLES15 host has packages installed that are affected by a vulnerability as referenced in
the SUSE-SU-2021:2292-1 advisory.

  - A use-after-free flaw was found in D-Bus Development branch &lt;= 1.13.16, dbus-1.12.x stable branch &lt;=
    1.12.18, and dbus-1.10.x and older branches &lt;= 1.10.30 when a system has multiple usernames sharing the
    same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap,
    which is still used by data structures necessary for the other usernames sharing the UID, possibly leading
    to a crash or other undefined behaviors (CVE-2020-35512)

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/1187105");
  # https://lists.suse.com/pipermail/sle-security-updates/2021-July/009121.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?276f7045");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-35512");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2020-35512");

  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:"2021/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dbus-1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dbus-1-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:dbus-1-x11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libdbus-1-3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libdbus-1-3-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021 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('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLES15', 'SUSE ' + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' &gt;!&lt; cpu && cpu !~ "^i[3-6]86$" && 's390' &gt;!&lt; cpu && 'aarch64' &gt;!&lt; cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE ' + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP2/3", os_ver + " SP" + sp);
if (os_ver == "SLES15" && (! preg(pattern:"^(1|2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP1/2/3", os_ver + " SP" + sp);

pkgs = [
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-ESPOS-release-1'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'cpu':'aarch64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'SLE_HPC-LTSS-release-15.1'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'2', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'2', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'2', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'2', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.2'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'3', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sle-module-basesystem-release-15.3'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-ltss-release-15.1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-ltss-release-15.1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-ltss-release-15.1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-ltss-release-15.1'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-ltss-release-15.1'},
    {'reference':'dbus-1-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-15.1'},
    {'reference':'dbus-1-devel-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-15.1'},
    {'reference':'dbus-1-x11-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-15.1'},
    {'reference':'libdbus-1-3-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-15.1'},
    {'reference':'libdbus-1-3-32bit-1.12.2-8.6.1', 'sp':'1', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-15.1'}
];

flag = 0;
foreach package_array ( pkgs ) {
  reference = NULL;
  release = NULL;
  sp = NULL;
  cpu = NULL;
  exists_check = NULL;
  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 && exists_check) {
    if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
  else if (reference && release) {
    if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  ltss_plugin_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in SUSE Enterprise Linux Server LTSS\n' +
    'repositories. Access to these package security updates require\n' +
    'a paid SUSE LTSS subscription.\n';
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + ltss_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'dbus-1 / dbus-1-devel / dbus-1-x11 / libdbus-1-3 / libdbus-1-3-32bit');
}