CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.7%
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5493 advisory.
golang: default Content-Type setting in net/http/cgi and net/http/fcgi could cause XSS (CVE-2020-24553)
golang: math/big: panic during recursive division of very large numbers (CVE-2020-28362)
golang: malicious symbol names can lead to code execution at build time (CVE-2020-28366)
golang: improper validation of cgo flags can lead to code execution at build time (CVE-2020-28367)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:5493. The text
# itself is copyright (C) Red Hat, Inc.
##
include('compat.inc');
if (description)
{
script_id(144407);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");
script_cve_id(
"CVE-2020-24553",
"CVE-2020-28362",
"CVE-2020-28366",
"CVE-2020-28367"
);
script_xref(name:"RHSA", value:"2020:5493");
script_xref(name:"IAVB", value:"2020-B-0071-S");
script_name(english:"RHEL 8 : go-toolset:rhel8 (RHSA-2020:5493)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for go-toolset:rhel8.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2020:5493 advisory.
- golang: default Content-Type setting in net/http/cgi and net/http/fcgi could cause XSS (CVE-2020-24553)
- golang: math/big: panic during recursive division of very large numbers (CVE-2020-28362)
- golang: malicious symbol names can lead to code execution at build time (CVE-2020-28366)
- golang: improper validation of cgo flags can lead to code execution at build time (CVE-2020-28367)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://access.redhat.com/documentation/en-us/red_hat_developer_tools/1/html/using_go_1.14.10_toolset
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0d60f94d");
# https://access.redhat.com/security/data/csaf/v2/advisories/2020/rhsa-2020_5493.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1ec92765");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#moderate");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:5493");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1874857");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1897635");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1897643");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1897646");
script_set_attribute(attribute:"solution", value:
"Update the RHEL go-toolset:rhel8 package based on the guidance in RHSA-2020:5493.");
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-2020-28367");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(20, 79, 295);
script_set_attribute(attribute:"vendor_severity", value:"Moderate");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/09/02");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/18");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:delve");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:go-toolset");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-bin");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-docs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-misc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-race");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-src");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:golang-tests");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Red Hat 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", "redhat_repos.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
include('rhel.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release(operator: 'ge', os_version: os_ver, rhel_version: '8')) audit(AUDIT_OS_NOT, 'Red Hat 8.x', 'Red Hat ' + 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$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);
var appstreams = {
'go-toolset:rhel8': [
{
'repo_relative_urls': [
'content/dist/rhel8/8.10/x86_64/appstream/debug',
'content/dist/rhel8/8.10/x86_64/appstream/os',
'content/dist/rhel8/8.10/x86_64/appstream/source/SRPMS',
'content/dist/rhel8/8.6/x86_64/appstream/debug',
'content/dist/rhel8/8.6/x86_64/appstream/os',
'content/dist/rhel8/8.6/x86_64/appstream/source/SRPMS',
'content/dist/rhel8/8.8/x86_64/appstream/debug',
'content/dist/rhel8/8.8/x86_64/appstream/os',
'content/dist/rhel8/8.8/x86_64/appstream/source/SRPMS',
'content/dist/rhel8/8.9/x86_64/appstream/debug',
'content/dist/rhel8/8.9/x86_64/appstream/os',
'content/dist/rhel8/8.9/x86_64/appstream/source/SRPMS',
'content/dist/rhel8/8/x86_64/appstream/debug',
'content/dist/rhel8/8/x86_64/appstream/os',
'content/dist/rhel8/8/x86_64/appstream/source/SRPMS'
],
'pkgs': [
{'reference':'delve-1.4.1-1.module+el8.3.0+7840+63dfb1ed', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'go-toolset-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-bin-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-docs-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-misc-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-race-1.14.12-1.module+el8.3.0+8784+380394dc', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-src-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'golang-tests-1.14.12-1.module+el8.3.0+8784+380394dc', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
]
}
]
};
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:appstreams, appstreams:TRUE);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var module_ver = get_kb_item('Host/RedHat/appstream/go-toolset');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');
if ('rhel8' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module go-toolset:' + module_ver);
var flag = 0;
var appstreams_found = 0;
foreach var 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 var module_array ( appstreams[module] ) {
var repo_relative_urls = NULL;
if (!empty_or_null(module_array['repo_relative_urls'])) repo_relative_urls = module_array['repo_relative_urls'];
foreach var package_array ( module_array['pkgs'] ) {
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;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'RHEL' + 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 (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
if (reference &&
_release &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
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, cves:cves)) flag++;
}
}
}
}
if (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module go-toolset:rhel8');
if (flag)
{
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
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 / golang-bin / golang-docs / etc');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24553
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28362
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28366
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28367
www.nessus.org/u?0d60f94d
www.nessus.org/u?1ec92765
access.redhat.com/errata/RHSA-2020:5493
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1874857
bugzilla.redhat.com/show_bug.cgi?id=1897635
bugzilla.redhat.com/show_bug.cgi?id=1897643
bugzilla.redhat.com/show_bug.cgi?id=1897646
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.7%