According to the version of the krb5 packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :
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(132135);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/04");
script_cve_id("CVE-2018-20217");
script_name(english:"EulerOS 2.0 SP3 : krb5 (EulerOS-SA-2019-2600)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
script_set_attribute(attribute:"description", value:
"According to the version of the krb5 packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerability :
- A Reachable Assertion issue was discovered in the KDC
in MIT Kerberos 5 (aka krb5) before 1.17. If an
attacker can obtain a krbtgt ticket using an older
encryption type (single-DES, triple-DES, or RC4), the
attacker can crash the KDC by making an S4U2Self
request.(CVE-2018-20217)
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-2019-2600
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a4b9982f");
script_set_attribute(attribute:"solution", value:
"Update the affected krb5 package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/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-2018-20217");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"patch_publication_date", value:"2019/12/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/18");
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-server-ldap");
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:2.0");
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) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
script_exclude_keys("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");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);
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-1.15.1-34.h2",
"krb5-libs-1.15.1-34.h2",
"krb5-pkinit-1.15.1-34.h2",
"krb5-server-1.15.1-34.h2",
"krb5-server-ldap-1.15.1-34.h2",
"krb5-workstation-1.15.1-34.h2",
"libkadm5-1.15.1-34.h2"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
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 | 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-server-ldap | p-cpe:/a:huawei:euleros:krb5-server-ldap |
huawei | euleros | krb5-workstation | p-cpe:/a:huawei:euleros:krb5-workstation |
huawei | euleros | libkadm5 | p-cpe:/a:huawei:euleros:libkadm5 |
huawei | euleros | 2.0 | cpe:/o:huawei:euleros:2.0 |