CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
68.1%
The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.10.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2021-18 advisory.
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 Mozilla Foundation Security Advisory mfsa2021-18.
# The text itself is copyright (C) Mozilla Foundation.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(149254);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/07/01");
script_cve_id("CVE-2021-29951");
script_xref(name:"IAVA", value:"2021-A-0214-S");
script_name(english:"Mozilla Firefox ESR < 78.10.1");
script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.10.1. It is, therefore,
affected by a vulnerability as referenced in the mfsa2021-18 advisory.
- The Mozilla Maintenance Service granted SERVICESTART access to BUILTIN|Users which, in a
domain network, grants normal remote users access to start or stop the service. This could be used to
prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also
exposed attack surface in the maintenance service.Note: This issue only affected Windows operating
systems older than Win 10 build 1709. Other operating systems are unaffected. (CVE-2021-29951)
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://www.mozilla.org/en-US/security/advisories/mfsa2021-18/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 78.10.1 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
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:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-29951");
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:"2021/05/04");
script_set_attribute(attribute:"patch_publication_date", value:"2021/05/04");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/04");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox_esr");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"MacOS X Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("macosx_firefox_installed.nasl");
script_require_keys("MacOSX/Firefox/Version");
exit(0);
}
include('mozilla_version.inc');
kb_base = 'MacOSX/Firefox';
get_kb_item_or_exit(kb_base+'/Installed');
version = get_kb_item_or_exit(kb_base+'/Version', exit_code:1);
path = get_kb_item_or_exit(kb_base+'/Path', exit_code:1);
is_esr = get_kb_item(kb_base+'/is_esr');
if (isnull(is_esr)) audit(AUDIT_NOT_INST, 'Mozilla Firefox ESR');
mozilla_check_version(version:version, path:path, product:'firefox', esr:TRUE, fix:'78.10.1', min:'78.0.0', severity:SECURITY_WARNING);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
68.1%