The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:2164-1 advisory.
When instructing cloud-init to set a random password for a new user account, versions before 21.2 would write that password to the world-readable log file /var/log/cloud-init-output.log. This could allow a local user to log in as another user. (CVE-2021-3429)
Sensitive data could be exposed in logs of cloud-init before version 23.1.2. An attacker could use this information to find hashed passwords and possibly escalate their privilege. (CVE-2023-1786)
Note that Nessus has not tested for these issues 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-2023:2164-1. The text itself
# is copyright (C) SUSE.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(175592);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/14");
script_cve_id("CVE-2021-3429", "CVE-2023-1786");
script_xref(name:"SuSE", value:"SUSE-SU-2023:2164-1");
script_name(english:"SUSE SLES12 Security Update : cloud-init (SUSE-SU-2023:2164-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2023:2164-1 advisory.
- When instructing cloud-init to set a random password for a new user account, versions before 21.2 would
write that password to the world-readable log file /var/log/cloud-init-output.log. This could allow a
local user to log in as another user. (CVE-2021-3429)
- Sensitive data could be exposed in logs of cloud-init before version 23.1.2. An attacker could use this
information to find hashed passwords and possibly escalate their privilege. (CVE-2023-1786)
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/1181283");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183939");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184085");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184758");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1210277");
script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2023-May/029326.html");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3429");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1786");
script_set_attribute(attribute:"solution", value:
"Update the affected cloud-init and / or cloud-init-config-suse packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N");
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:N/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-2023-1786");
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:"2021/03/18");
script_set_attribute(attribute:"patch_publication_date", value:"2023/05/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:cloud-init");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:cloud-init-config-suse");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
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) 2023 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:"^(SLES12|SLES_SAP12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12 / SLES_SAP12', 'SUSE (' + os_ver + ')');
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && '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 == "SLES12" && (! preg(pattern:"^(0|3|4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES12 SP0/3/4/5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP12" && (! preg(pattern:"^(0|3|4|5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP12 SP0/3/4/5", os_ver + " SP" + service_pack);
var pkgs = [
{'reference':'cloud-init-20.2-37.57.1', 'sp':'0', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'3', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'4', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'0', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'3', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'4', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLES_SAP-release-12', 'SLES_SAP-release-12.3', 'SLES_SAP-release-12.4', 'SLES_SAP-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'0', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'3', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'4', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-20.2-37.57.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'0', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'3', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'4', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']},
{'reference':'cloud-init-config-suse-20.2-37.57.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE, 'exists_check':['SLE_HPC-release-12', 'sle-module-public-cloud-release-12-0', 'sles-release-12', 'sles-release-12.3', 'sles-release-12.4', 'sles-release-12.5']}
];
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_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, 'cloud-init / cloud-init-config-suse');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3429
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1786
bugzilla.suse.com/1181283
bugzilla.suse.com/1183939
bugzilla.suse.com/1184085
bugzilla.suse.com/1184758
bugzilla.suse.com/1210277
lists.suse.com/pipermail/sle-updates/2023-May/029326.html
www.suse.com/security/cve/CVE-2021-3429
www.suse.com/security/cve/CVE-2023-1786