According to the versions of the krb5 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :
An authentication bypass flaw was found in the way krb5’s certauth interface handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances. (CVE-2017-7562)
A denial of service flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to exit with an assertion failure by making an invalid S4U2Self or S4U2Proxy request.i1/4^CVE-2017-11368i1/4%0
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(123853);
script_version("1.20");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id(
"CVE-2017-11368",
"CVE-2017-7562"
);
script_name(english:"EulerOS Virtualization 2.5.3 : krb5 (EulerOS-SA-2019-1167)");
script_summary(english:"Checks the rpm output for the updated packages.");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the krb5 packages installed, the EulerOS
Virtualization installation on the remote host is affected by the
following vulnerabilities :
- An authentication bypass flaw was found in the way
krb5's certauth interface handled the validation of
client certificates. A remote attacker able to
communicate with the KDC could potentially use this
flaw to impersonate arbitrary principals under rare and
erroneous circumstances. (CVE-2017-7562)
- A denial of service flaw was found in MIT Kerberos
krb5kdc service. An authenticated attacker could use
this flaw to cause krb5kdc to exit with an assertion
failure by making an invalid S4U2Self or S4U2Proxy
request.i1/4^CVE-2017-11368i1/4%0
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-2019-1167
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?53a36562");
script_set_attribute(attribute:"solution", value:
"Update the affected krb5 packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/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:L/UI:N/S:U/C:N/I:H/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:"2019/04/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:krb5-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:krb5-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:krb5-pkinit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:krb5-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:krb5-workstation");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libkadm5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.5.3");
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 != "2.5.3") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.5.3");
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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["krb5-devel-1.15.1-19.h1",
"krb5-libs-1.15.1-19.h1",
"krb5-pkinit-1.15.1-19.h1",
"krb5-server-1.15.1-19.h1",
"krb5-workstation-1.15.1-19.h1",
"libkadm5-1.15.1-19.h1"];
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, "krb5");
}
Vendor | Product | Version | CPE |
---|---|---|---|
huawei | euleros | uvp | cpe:/o:huawei:euleros:uvp:2.5.3 |
huawei | euleros | krb5-devel | p-cpe:/a:huawei:euleros:krb5-devel |
huawei | euleros | krb5-libs | p-cpe:/a:huawei:euleros:krb5-libs |
huawei | euleros | krb5-pkinit | p-cpe:/a:huawei:euleros:krb5-pkinit |
huawei | euleros | krb5-server | p-cpe:/a:huawei:euleros:krb5-server |
huawei | euleros | krb5-workstation | p-cpe:/a:huawei:euleros:krb5-workstation |
huawei | euleros | libkadm5 | p-cpe:/a:huawei:euleros:libkadm5 |