According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
A flaw was found in Samba’s libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request.
The highest threat from this vulnerability is to system availability.(CVE-2021-20277)
An extensible library that implements an LDAP like API to access remote LDAPservers, or use local tdb databases.(CVE-2020-27840)
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(151789);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/07");
script_cve_id("CVE-2020-27840", "CVE-2021-20277");
script_name(english:"EulerOS 2.0 SP5 : samba (EulerOS-SA-2021-2229)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the samba packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :
- A flaw was found in Samba's libldb. Multiple,
consecutive leading spaces in an LDAP attribute can
lead to an out-of-bounds memory write, leading to a
crash of the LDAP server process handling the request.
The highest threat from this vulnerability is to system
availability.(CVE-2021-20277)
- An extensible library that implements an LDAP like API
to access remote LDAPservers, or use local tdb
databases.(CVE-2020-27840)
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-2021-2229
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bc8e049e");
script_set_attribute(attribute:"solution", value:
"Update the affected samba packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:L/PR:N/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-2021-20277");
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:"2021/07/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsmbclient");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libwbclient");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-client");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-client-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-common-tools");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-python");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind-clients");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-winbind-modules");
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) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "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 = ["libsmbclient-4.7.1-9.h26.eulerosv2r7",
"libwbclient-4.7.1-9.h26.eulerosv2r7",
"samba-4.7.1-9.h26.eulerosv2r7",
"samba-client-4.7.1-9.h26.eulerosv2r7",
"samba-client-libs-4.7.1-9.h26.eulerosv2r7",
"samba-common-4.7.1-9.h26.eulerosv2r7",
"samba-common-libs-4.7.1-9.h26.eulerosv2r7",
"samba-common-tools-4.7.1-9.h26.eulerosv2r7",
"samba-libs-4.7.1-9.h26.eulerosv2r7",
"samba-python-4.7.1-9.h26.eulerosv2r7",
"samba-winbind-4.7.1-9.h26.eulerosv2r7",
"samba-winbind-clients-4.7.1-9.h26.eulerosv2r7",
"samba-winbind-modules-4.7.1-9.h26.eulerosv2r7"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"5", 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, "samba");
}
Vendor | Product | Version | CPE |
---|---|---|---|
huawei | euleros | libsmbclient | p-cpe:/a:huawei:euleros:libsmbclient |
huawei | euleros | libwbclient | p-cpe:/a:huawei:euleros:libwbclient |
huawei | euleros | samba | p-cpe:/a:huawei:euleros:samba |
huawei | euleros | samba-client | p-cpe:/a:huawei:euleros:samba-client |
huawei | euleros | samba-client-libs | p-cpe:/a:huawei:euleros:samba-client-libs |
huawei | euleros | samba-common | p-cpe:/a:huawei:euleros:samba-common |
huawei | euleros | samba-common-libs | p-cpe:/a:huawei:euleros:samba-common-libs |
huawei | euleros | samba-common-tools | p-cpe:/a:huawei:euleros:samba-common-tools |
huawei | euleros | samba-libs | p-cpe:/a:huawei:euleros:samba-libs |
huawei | euleros | samba-python | p-cpe:/a:huawei:euleros:samba-python |