CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
90.6%
According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
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 all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.(CVE-2020-10745)
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 flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.(CVE-2020-14303)
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(142101);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/13");
script_cve_id(
"CVE-2020-10730",
"CVE-2020-10745",
"CVE-2020-10760",
"CVE-2020-14303"
);
script_name(english:"EulerOS 2.0 SP5 : samba (EulerOS-SA-2020-2270)");
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 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 all Samba versions before 4.10.17,
before 4.11.11 and before 4.12.4 in the way it
processed NetBios over TCP/IP. This flaw allows a
remote attacker could to cause the Samba server to
consume excessive CPU use, resulting in a denial of
service. This highest threat from this vulnerability is
to system availability.(CVE-2020-10745)
- 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 flaw was found in the AD DC NBT server in all Samba
versions before 4.10.17, before 4.11.11 and before
4.12.4. A samba user could send an empty UDP packet to
cause the samba server to crash.(CVE-2020-14303)
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-2020-2270
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7957e6dc");
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:C");
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-2020-10745");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-14303");
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:"2020/10/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/30");
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) 2020-2024 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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(5)$") 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.h20.eulerosv2r7",
"libwbclient-4.7.1-9.h20.eulerosv2r7",
"samba-4.7.1-9.h20.eulerosv2r7",
"samba-client-4.7.1-9.h20.eulerosv2r7",
"samba-client-libs-4.7.1-9.h20.eulerosv2r7",
"samba-common-4.7.1-9.h20.eulerosv2r7",
"samba-common-libs-4.7.1-9.h20.eulerosv2r7",
"samba-common-tools-4.7.1-9.h20.eulerosv2r7",
"samba-libs-4.7.1-9.h20.eulerosv2r7",
"samba-python-4.7.1-9.h20.eulerosv2r7",
"samba-winbind-4.7.1-9.h20.eulerosv2r7",
"samba-winbind-clients-4.7.1-9.h20.eulerosv2r7",
"samba-winbind-modules-4.7.1-9.h20.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_HOLE,
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");
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
90.6%