CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.8%
The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:5015 advisory.
Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 (CVE-2021-4129)
Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)
Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)
Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)
Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)
Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)
Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (CVE-2021-43542)
Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)
Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)
Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2021:5015. The text
# itself is copyright (C) Red Hat, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(155956);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/28");
script_cve_id(
"CVE-2021-4129",
"CVE-2021-43536",
"CVE-2021-43537",
"CVE-2021-43538",
"CVE-2021-43539",
"CVE-2021-43541",
"CVE-2021-43542",
"CVE-2021-43543",
"CVE-2021-43545",
"CVE-2021-43546"
);
script_xref(name:"RHSA", value:"2021:5015");
script_xref(name:"IAVA", value:"2021-A-0569-S");
script_name(english:"RHEL 8 : firefox (RHSA-2021:5015)");
script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for firefox.");
script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as
referenced in the RHSA-2021:5015 advisory.
- Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 (CVE-2021-4129)
- Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)
- Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)
- Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)
- Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)
- Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)
- Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler
(CVE-2021-43542)
- Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)
- Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)
- Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)
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/security/data/csaf/v2/advisories/2021/rhsa-2021_5015.json
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?74b2fef8");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2021:5015");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030105");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030106");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030109");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030110");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030111");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030112");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030113");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030114");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030115");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2030116");
script_set_attribute(attribute:"solution", value:
"Update the RHEL firefox package based on the guidance in RHSA-2021:5015.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/PR:N/UI:N/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-2021-43539");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-4129");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(79, 120, 209, 416, 428, 835, 1021);
script_set_attribute(attribute:"vendor_severity", value:"Important");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/12/07");
script_set_attribute(attribute:"patch_publication_date", value:"2021/12/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:rhel_eus:8.4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:firefox");
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) 2021-2024 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: 'eq', os_version: os_ver, rhel_version: '8.4')) audit(AUDIT_OS_NOT, 'Red Hat 8.4', '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 constraints = [
{
'repo_relative_urls': [
'content/aus/rhel8/8.4/x86_64/appstream/debug',
'content/aus/rhel8/8.4/x86_64/appstream/os',
'content/aus/rhel8/8.4/x86_64/appstream/source/SRPMS',
'content/e4s/rhel8/8.4/aarch64/appstream/debug',
'content/e4s/rhel8/8.4/aarch64/appstream/os',
'content/e4s/rhel8/8.4/aarch64/appstream/source/SRPMS',
'content/e4s/rhel8/8.4/ppc64le/appstream/debug',
'content/e4s/rhel8/8.4/ppc64le/appstream/os',
'content/e4s/rhel8/8.4/ppc64le/appstream/source/SRPMS',
'content/e4s/rhel8/8.4/s390x/appstream/debug',
'content/e4s/rhel8/8.4/s390x/appstream/os',
'content/e4s/rhel8/8.4/s390x/appstream/source/SRPMS',
'content/e4s/rhel8/8.4/x86_64/appstream/debug',
'content/e4s/rhel8/8.4/x86_64/appstream/os',
'content/e4s/rhel8/8.4/x86_64/appstream/source/SRPMS',
'content/eus/rhel8/8.4/aarch64/appstream/debug',
'content/eus/rhel8/8.4/aarch64/appstream/os',
'content/eus/rhel8/8.4/aarch64/appstream/source/SRPMS',
'content/eus/rhel8/8.4/ppc64le/appstream/debug',
'content/eus/rhel8/8.4/ppc64le/appstream/os',
'content/eus/rhel8/8.4/ppc64le/appstream/source/SRPMS',
'content/eus/rhel8/8.4/s390x/appstream/debug',
'content/eus/rhel8/8.4/s390x/appstream/os',
'content/eus/rhel8/8.4/s390x/appstream/source/SRPMS',
'content/eus/rhel8/8.4/x86_64/appstream/debug',
'content/eus/rhel8/8.4/x86_64/appstream/os',
'content/eus/rhel8/8.4/x86_64/appstream/source/SRPMS',
'content/tus/rhel8/8.4/x86_64/appstream/debug',
'content/tus/rhel8/8.4/x86_64/appstream/os',
'content/tus/rhel8/8.4/x86_64/appstream/source/SRPMS'
],
'pkgs': [
{'reference':'firefox-91.4.0-1.el8_4', 'sp':'4', 'release':'8', 'rpm_spec_vers_cmp':TRUE, 'allowmaj':TRUE}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
foreach var pkg ( constraint_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(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['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 (flag)
{
var subscription_caveat = '\n' +
'NOTE: This vulnerability check contains fixes that apply to\n' +
'packages only available in the Red Hat Enterprise Linux\n' +
'Extended Update Support repository.\n' +
'Access to this repository requires a paid RHEL subscription.\n';
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();
else extra = subscription_caveat + 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, 'firefox');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4129
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43536
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43537
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43539
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43541
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43542
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43543
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43545
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43546
www.nessus.org/u?74b2fef8
access.redhat.com/errata/RHSA-2021:5015
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=2030105
bugzilla.redhat.com/show_bug.cgi?id=2030106
bugzilla.redhat.com/show_bug.cgi?id=2030109
bugzilla.redhat.com/show_bug.cgi?id=2030110
bugzilla.redhat.com/show_bug.cgi?id=2030111
bugzilla.redhat.com/show_bug.cgi?id=2030112
bugzilla.redhat.com/show_bug.cgi?id=2030113
bugzilla.redhat.com/show_bug.cgi?id=2030114
bugzilla.redhat.com/show_bug.cgi?id=2030115
bugzilla.redhat.com/show_bug.cgi?id=2030116
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.8%