According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an ‘NXNSAttack’ issue. This is triggered by random subdomains in the NSDNAME in NS records.(CVE-2020-12662)
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.(CVE-2020-12663)
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(139160);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/27");
script_cve_id("CVE-2020-12662", "CVE-2020-12663");
script_name(english:"EulerOS 2.0 SP8 : unbound (EulerOS-SA-2020-1830)");
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 unbound packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :
- Unbound before 1.10.1 has Insufficient Control of
Network Message Volume, aka an 'NXNSAttack' issue. This
is triggered by random subdomains in the NSDNAME in NS
records.(CVE-2020-12662)
- Unbound before 1.10.1 has an infinite loop via
malformed DNS answers received from upstream
servers.(CVE-2020-12663)
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-2020-1830
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1e4f8cec");
script_set_attribute(attribute:"solution", value:
"Update the affected unbound 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-2020-12663");
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:"2020/07/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/30");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python2-unbound");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-unbound");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:unbound");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:unbound-libs");
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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(8)$") 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 = ["python2-unbound-1.7.3-9.h3.eulerosv2r8",
"python3-unbound-1.7.3-9.h3.eulerosv2r8",
"unbound-1.7.3-9.h3.eulerosv2r8",
"unbound-libs-1.7.3-9.h3.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, "unbound");
}
Vendor | Product | Version | CPE |
---|---|---|---|
huawei | euleros | python2-unbound | p-cpe:/a:huawei:euleros:python2-unbound |
huawei | euleros | python3-unbound | p-cpe:/a:huawei:euleros:python3-unbound |
huawei | euleros | unbound | p-cpe:/a:huawei:euleros:unbound |
huawei | euleros | unbound-libs | p-cpe:/a:huawei:euleros:unbound-libs |
huawei | euleros | 2.0 | cpe:/o:huawei:euleros:2.0 |