According to the versions of the sssd packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :
The UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD utilizes too broad of a set of permissions. Any user who can send a message using the same raw protocol that sudo and SSSD use can read the sudo rules available for any user.(CVE-2018-10852)
It was found that sssd’s sysdb_search_user_by_upn_res() function did not sanitize requests when querying its local cache and was vulnerable to injection. In a centralized login environment, if a password hash was locally cached for a given user, an authenticated attacker could use this flaw to retrieve it.(CVE-2017-12173)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(124914);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id(
"CVE-2017-12173",
"CVE-2018-10852"
);
script_name(english:"EulerOS Virtualization for ARM 64 3.0.1.0 : sssd (EulerOS-SA-2019-1411)");
script_summary(english:"Checks the rpm output for the updated packages.");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the sssd packages installed, the EulerOS
Virtualization for ARM 64 installation on the remote host is affected
by the following vulnerabilities :
- The UNIX pipe which sudo uses to contact SSSD and read
the available sudo rules from SSSD utilizes too broad
of a set of permissions. Any user who can send a
message using the same raw protocol that sudo and SSSD
use can read the sudo rules available for any
user.(CVE-2018-10852)
- It was found that sssd's sysdb_search_user_by_upn_res()
function did not sanitize requests when querying its
local cache and was vulnerable to injection. In a
centralized login environment, if a password hash was
locally cached for a given user, an authenticated
attacker could use this flaw to retrieve
it.(CVE-2017-12173)
Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1411
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?62c45445");
script_set_attribute(attribute:"solution", value:
"Update the affected sssd packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/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:N/AC:L/PR:N/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:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"patch_publication_date", value:"2019/05/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libipa_hbac");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_autofs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_certmap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_idmap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_nss_idmap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_sudo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-sssdconfig");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ad");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-client");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common-pac");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ipa");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-proxy");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2021 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/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);
flag = 0;
pkgs = ["libipa_hbac-1.16.0-19.5.h3",
"libsss_autofs-1.16.0-19.5.h3",
"libsss_certmap-1.16.0-19.5.h3",
"libsss_idmap-1.16.0-19.5.h3",
"libsss_nss_idmap-1.16.0-19.5.h3",
"libsss_sudo-1.16.0-19.5.h3",
"python-sssdconfig-1.16.0-19.5.h3",
"sssd-1.16.0-19.5.h3",
"sssd-ad-1.16.0-19.5.h3",
"sssd-client-1.16.0-19.5.h3",
"sssd-common-1.16.0-19.5.h3",
"sssd-common-pac-1.16.0-19.5.h3",
"sssd-ipa-1.16.0-19.5.h3",
"sssd-krb5-1.16.0-19.5.h3",
"sssd-krb5-common-1.16.0-19.5.h3",
"sssd-ldap-1.16.0-19.5.h3",
"sssd-proxy-1.16.0-19.5.h3"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "sssd");
}