According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4.
Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability.(CVE-2020-10730)
A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.(CVE-2020-10760)
A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.(CVE-2020-14318)
A null pointer dereference flaw was found in samba’s Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.(CVE-2020-14323)
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(144176);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id(
"CVE-2020-10730",
"CVE-2020-10760",
"CVE-2020-14318",
"CVE-2020-14323"
);
script_name(english:"EulerOS 2.0 SP8 : samba (EulerOS-SA-2020-2533)");
script_summary(english:"Checks the rpm output for the updated packages.");
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 NULL pointer dereference, or possible use-after-free
flaw was found in Samba AD LDAP server in versions
before 4.10.17, before 4.11.11 and before 4.12.4.
Although some versions of Samba shipped with Red Hat
Enterprise Linux do not support Samba in AD mode, the
affected code is shipped with the libldb package. This
flaw allows an authenticated user to possibly trigger a
use-after-free or NULL pointer dereference. The highest
threat from this vulnerability is to system
availability.(CVE-2020-10730)
- A use-after-free flaw was found in all samba LDAP
server versions before 4.10.17, before 4.11.11, before
4.12.4 used in a AC DC configuration. A Samba LDAP user
could use this flaw to crash samba.(CVE-2020-10760)
- A flaw was found in the way samba handled file and
directory permissions. An authenticated user could use
this flaw to gain access to certain file and directory
information which otherwise would be unavailable to the
attacker.(CVE-2020-14318)
- A null pointer dereference flaw was found in samba's
Winbind service in versions before 4.11.15, before
4.12.9 and before 4.13.1. A local user could use this
flaw to crash the winbind service causing denial of
service.(CVE-2020-14323)
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-2020-2533
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4823fe5d");
script_set_attribute(attribute:"solution", value:
"Update the affected samba packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:L/UI:N/S:U/C:L/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-2020-14318");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/14");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ctdb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ctdb-tests");
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:python2-samba");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python2-samba-test");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-samba");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-samba-test");
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-dc-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-krb5-printing");
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-pidl");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-test");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:samba-test-libs");
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-krb5-locator");
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) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(8)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8", "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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);
flag = 0;
pkgs = ["ctdb-4.9.1-2.h27.eulerosv2r8",
"ctdb-tests-4.9.1-2.h27.eulerosv2r8",
"libsmbclient-4.9.1-2.h27.eulerosv2r8",
"libwbclient-4.9.1-2.h27.eulerosv2r8",
"python2-samba-4.9.1-2.h27.eulerosv2r8",
"python2-samba-test-4.9.1-2.h27.eulerosv2r8",
"python3-samba-4.9.1-2.h27.eulerosv2r8",
"python3-samba-test-4.9.1-2.h27.eulerosv2r8",
"samba-4.9.1-2.h27.eulerosv2r8",
"samba-client-4.9.1-2.h27.eulerosv2r8",
"samba-client-libs-4.9.1-2.h27.eulerosv2r8",
"samba-common-4.9.1-2.h27.eulerosv2r8",
"samba-common-libs-4.9.1-2.h27.eulerosv2r8",
"samba-common-tools-4.9.1-2.h27.eulerosv2r8",
"samba-dc-libs-4.9.1-2.h27.eulerosv2r8",
"samba-krb5-printing-4.9.1-2.h27.eulerosv2r8",
"samba-libs-4.9.1-2.h27.eulerosv2r8",
"samba-pidl-4.9.1-2.h27.eulerosv2r8",
"samba-test-4.9.1-2.h27.eulerosv2r8",
"samba-test-libs-4.9.1-2.h27.eulerosv2r8",
"samba-winbind-4.9.1-2.h27.eulerosv2r8",
"samba-winbind-clients-4.9.1-2.h27.eulerosv2r8",
"samba-winbind-krb5-locator-4.9.1-2.h27.eulerosv2r8",
"samba-winbind-modules-4.9.1-2.h27.eulerosv2r8"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"8", 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 | ctdb | p-cpe:/a:huawei:euleros:ctdb |
huawei | euleros | ctdb-tests | p-cpe:/a:huawei:euleros:ctdb-tests |
huawei | euleros | libsmbclient | p-cpe:/a:huawei:euleros:libsmbclient |
huawei | euleros | libwbclient | p-cpe:/a:huawei:euleros:libwbclient |
huawei | euleros | python2-samba | p-cpe:/a:huawei:euleros:python2-samba |
huawei | euleros | python2-samba-test | p-cpe:/a:huawei:euleros:python2-samba-test |
huawei | euleros | python3-samba | p-cpe:/a:huawei:euleros:python3-samba |
huawei | euleros | python3-samba-test | p-cpe:/a:huawei:euleros:python3-samba-test |
huawei | euleros | samba | p-cpe:/a:huawei:euleros:samba |
huawei | euleros | samba-client | p-cpe:/a:huawei:euleros:samba-client |