The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-3076 advisory.
encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method. (CVE-2021-27918)
net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can each be affected in some configurations. (CVE-2021-31525)
The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic. (CVE-2021-34558)
In archive/zip in Go before 1.15.13 and 1.16.x before 1.16.5, a crafted file count (in an archive’s header) can cause a NewReader or OpenReader panic. (CVE-2021-33196)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2021-3076.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152513);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");
script_cve_id(
"CVE-2021-27918",
"CVE-2021-31525",
"CVE-2021-33196",
"CVE-2021-34558"
);
script_xref(name:"IAVB", value:"2021-B-0040-S");
script_xref(name:"IAVB", value:"2021-B-0047-S");
script_name(english:"Oracle Linux 8 : go-toolset:ol8 (ELSA-2021-3076)");
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-2021-3076 advisory.
- encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader
(for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode,
DecodeElement, or Skip method. (CVE-2021-27918)
- net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of
service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can each
be affected in some configurations. (CVE-2021-31525)
- The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an
X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS
server to cause a TLS client to panic. (CVE-2021-34558)
- In archive/zip in Go before 1.15.13 and 1.16.x before 1.16.5, a crafted file count (in an archive's
header) can cause a NewReader or OpenReader panic. (CVE-2021-33196)
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-2021-3076.html");
script_set_attribute(attribute:"solution", value:
"Update the affected 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:POC/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:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-33196");
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:"2021/03/11");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/12");
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:delve");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:go-toolset");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-bin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-misc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-race");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-src");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:golang-tests");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 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');
var 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');
var 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');
var os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 8', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
var module_ver = get_kb_item('Host/RedHat/appstream/go-toolset');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:ol8');
if ('ol8' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module go-toolset:' + module_ver);
var appstreams = {
'go-toolset:ol8': [
{'reference':'delve-1.5.0-2.0.1.module+el8.4.0+20021+8a86d991', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-docs-1.15.14-1.module+el8.4.0+20290+7af514f4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-misc-1.15.14-1.module+el8.4.0+20290+7af514f4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-race-1.15.14-1.module+el8.4.0+20290+7af514f4', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-src-1.15.14-1.module+el8.4.0+20290+7af514f4', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-tests-1.15.14-1.module+el8.4.0+20290+7af514f4', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
var flag = 0;
var appstreams_found = 0;
foreach module (keys(appstreams)) {
var appstream = NULL;
var appstream_name = NULL;
var appstream_version = NULL;
var 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] ) {
var reference = NULL;
var release = NULL;
var sp = NULL;
var cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var 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 go-toolset:ol8');
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'delve / go-toolset / golang / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
oracle | linux | 8 | cpe:/o:oracle:linux:8 |
oracle | linux | delve | p-cpe:/a:oracle:linux:delve |
oracle | linux | go-toolset | p-cpe:/a:oracle:linux:go-toolset |
oracle | linux | golang | p-cpe:/a:oracle:linux:golang |
oracle | linux | golang-bin | p-cpe:/a:oracle:linux:golang-bin |
oracle | linux | golang-docs | p-cpe:/a:oracle:linux:golang-docs |
oracle | linux | golang-misc | p-cpe:/a:oracle:linux:golang-misc |
oracle | linux | golang-race | p-cpe:/a:oracle:linux:golang-race |
oracle | linux | golang-src | p-cpe:/a:oracle:linux:golang-src |
oracle | linux | golang-tests | p-cpe:/a:oracle:linux:golang-tests |