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nessusThis script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.MACOS_FIREFOX_78_10_1_ESR.NASL
HistoryMay 04, 2021 - 12:00 a.m.

Mozilla Firefox ESR < 78.10.1

2021-05-0400:00:00
This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
33
mozilla firefox
esr
vulnerability
macos
maintenance service
remote users
attack surface
cve-2021-29951
nessusscanner

CVSS2

6.4

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

6.5

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

0.003

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.

  • 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.

#%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

6.4

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

6.5

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

0.003

Percentile

68.1%