The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-0735 advisory.
Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an ‘unknownProtocol’ are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.
(CVE-2021-22883)
Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes localhost6. When localhost6 is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. If the attacker controls the victim’s DNS server or can spoof its responses, the DNS rebinding protection can be bypassed by using the localhost6 domain. As long as the attacker uses the localhost6 domain, they can still apply the attack described in CVE-2018-7160. (CVE-2021-22884)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2021-0735.
##
include('compat.inc');
if (description)
{
script_id(147168);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/12");
script_cve_id("CVE-2021-22883", "CVE-2021-22884");
script_xref(name:"IAVB", value:"2021-B-0012-S");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_name(english:"Oracle Linux 8 : nodejs:10 (ELSA-2021-0735)");
script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2021-0735 advisory.
- Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too
many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file
descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept
new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is
configured, then this lead to an excessive memory usage and cause the system to run out of memory.
(CVE-2021-22883)
- Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the
whitelist includes localhost6. When localhost6 is not present in /etc/hosts, it is just an ordinary
domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or
can spoof its responses, the DNS rebinding protection can be bypassed by using the localhost6 domain. As
long as the attacker uses the localhost6 domain, they can still apply the attack described in
CVE-2018-7160. (CVE-2021-22884)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2021-0735.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-22884");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/03");
script_set_attribute(attribute:"patch_publication_date", value:"2021/03/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/05");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs-full-i18n");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs-nodemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nodejs-packaging");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:npm");
script_set_attribute(attribute:"stig_severity", value:"II");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");
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);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
module_ver = get_kb_item('Host/RedHat/appstream/nodejs');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module nodejs:10');
if ('10' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module nodejs:' + module_ver);
appstreams = {
'nodejs:10': [
{'reference':'nodejs-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-devel-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-devel-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-docs-10.24.0-1.module+el8.3.0+9671+154373c8', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-full-i18n-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-full-i18n-10.24.0-1.module+el8.3.0+9671+154373c8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'nodejs-nodemon-1.18.3-1.module+el8.1.0+5392+4d6b561f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'nodejs-packaging-17-3.module+el8.1.0+5392+4d6b561f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'npm-6.14.11-1.10.24.0.1.module+el8.3.0+9671+154373c8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'},
{'reference':'npm-6.14.11-1.10.24.0.1.module+el8.3.0+9671+154373c8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
]
};
flag = 0;
appstreams_found = 0;
foreach module (keys(appstreams)) {
appstream = NULL;
appstream_name = NULL;
appstream_version = NULL;
appstream_split = split(module, sep:':', keep:FALSE);
if (!empty_or_null(appstream_split)) {
appstream_name = appstream_split[0];
appstream_version = appstream_split[1];
if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RedHat/appstream/' + appstream_name);
}
if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
appstreams_found++;
foreach package_array ( appstreams[module] ) {
reference = NULL;
release = NULL;
sp = NULL;
cpu = NULL;
el_string = NULL;
rpm_spec_vers_cmp = NULL;
epoch = NULL;
allowmaj = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (reference && release) {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
}
}
if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module nodejs:10');
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, 'nodejs / nodejs-devel / nodejs-docs / etc');
}