CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
90.8%
The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-51 advisory.
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 Mozilla Foundation Security Advisory mfsa2020-51.
# The text itself is copyright (C) Mozilla Foundation.
##
include('compat.inc');
if (description)
{
script_id(142912);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");
script_cve_id(
"CVE-2020-15999",
"CVE-2020-16012",
"CVE-2020-26951",
"CVE-2020-26953",
"CVE-2020-26956",
"CVE-2020-26958",
"CVE-2020-26959",
"CVE-2020-26960",
"CVE-2020-26961",
"CVE-2020-26965",
"CVE-2020-26966",
"CVE-2020-26968"
);
script_xref(name:"MFSA", value:"2020-51");
script_xref(name:"IAVA", value:"2020-A-0537-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");
script_xref(name:"CEA-ID", value:"CEA-2020-0124");
script_name(english:"Mozilla Firefox ESR < 78.5");
script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.5. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2020-51 advisory.
- Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to
potentially exploit heap corruption via a crafted HTML page. (CVE-2020-15999)
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/mfsa2020-51/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 78.5 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-26968");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/20");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/17");
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) 2020-2022 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:'78.5', min:'78.0.0', xss:TRUE, severity:SECURITY_HOLE);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15999
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16012
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26951
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26953
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26956
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26958
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26959
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26960
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26961
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26965
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26966
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26968
www.mozilla.org/en-US/security/advisories/mfsa2020-51/
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
90.8%