CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
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
EPSS
Percentile
92.4%
The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-3665 advisory.
Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs. (CVE-2020-16845)
The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String. (CVE-2020-14040)
Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time.
(CVE-2020-15586)
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-2020-3665.
##
include('compat.inc');
if (description)
{
script_id(140524);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/05/11");
script_cve_id("CVE-2020-14040", "CVE-2020-15586", "CVE-2020-16845");
script_xref(name:"IAVB", value:"2020-B-0060-S");
script_name(english:"Oracle Linux 8 : go-toolset:ol8 (ELSA-2020-3665)");
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-2020-3665 advisory.
- Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in
encoding/binary via invalid inputs. (CVE-2020-16845)
- The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the
UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker
could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an
infinite loop if the String function on the Decoder is called, or the Decoder is passed to
golang.org/x/text/transform.String. (CVE-2020-14040)
- Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by
the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time.
(CVE-2020-15586)
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-2020-3665.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: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-2020-16845");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/17");
script_set_attribute(attribute:"patch_publication_date", value:"2020/09/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/11");
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) 2020-2021 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/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);
appstreams = {
'go-toolset:ol8': [
{'reference':'delve-1.3.2-3.0.1.module+el8.2.0+5587+55f012d0', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-docs-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-misc-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-race-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-src-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-tests-1.13.15-1.module+el8.2.0+7788+3ff8dc7f', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
};
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 go-toolset:ol8');
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, 'delve / go-toolset / golang / etc');
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
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
EPSS
Percentile
92.4%