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
EPSS
Percentile
82.8%
The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 91.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-47 advisory.
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. (CVE-2021-38502)
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. (CVE-2021-38496)
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. (CVE-2021-38497)
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. (CVE-2021-38498)
In the crossbeam crate, one or more tasks in the worker queue could have been be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this could have caused a double free and a memory leak. (CVE-2021-32810)
Mozilla developers and community members Andreas Pehrson and Christian Holler reported memory safety bugs present in Thunderbird 91.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2021-38500)
Mozilla developers and community members Kevin Brosnan, Mihai Alexandru Michis, and Christian Holler reported memory safety bugs present in Thunderbird 91.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2021-38501)
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 mfsa2021-47.
# The text itself is copyright (C) Mozilla Foundation.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(154058);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/09");
script_cve_id(
"CVE-2021-32810",
"CVE-2021-38496",
"CVE-2021-38497",
"CVE-2021-38498",
"CVE-2021-38500",
"CVE-2021-38501",
"CVE-2021-38502"
);
script_xref(name:"IAVA", value:"2021-A-0461-S");
script_xref(name:"IAVA", value:"2021-A-0450-S");
script_name(english:"Mozilla Thunderbird < 91.2");
script_set_attribute(attribute:"synopsis", value:
"A mail client installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 91.2. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2021-47 advisory.
- Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could
perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated
session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was
configured, the MITM could obtain the authentication credentials, too. (CVE-2021-38502)
- During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in
memory corruption and a potentially exploitable crash. (CVE-2021-38496)
- Through use of reportValidity() and window.open(), a plain-text validation
message could have been overlaid on another origin, leading to possible user confusion and spoofing
attacks. (CVE-2021-38497)
- During process shutdown, a document could have caused a use-after-free of a languages service object,
leading to memory corruption and a potentially exploitable crash. (CVE-2021-38498)
- In the crossbeam crate, one or more tasks in the worker queue could have been be popped twice instead of
other tasks that are forgotten and never popped. If tasks are allocated on the heap, this could have
caused a double free and a memory leak. (CVE-2021-32810)
- Mozilla developers and community members Andreas Pehrson and Christian Holler reported memory safety bugs
present in Thunderbird 91.1. Some of these bugs showed evidence of memory corruption and we presume that
with enough effort some of these could have been exploited to run arbitrary code. (CVE-2021-38500)
- Mozilla developers and community members Kevin Brosnan, Mihai Alexandru Michis, and Christian Holler
reported memory safety bugs present in Thunderbird 91.1. Some of these bugs showed evidence of memory
corruption and we presume that with enough effort some of these could have been exploited to run arbitrary
code. (CVE-2021-38501)
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/mfsa2021-47/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Thunderbird version 91.2 or later.");
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:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-38501");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-32810");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/08/02");
script_set_attribute(attribute:"patch_publication_date", value:"2021/10/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:thunderbird");
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) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("macosx_thunderbird_installed.nasl");
script_require_keys("MacOSX/Thunderbird/Installed");
exit(0);
}
include('mozilla_version.inc');
var kb_base = 'MacOSX/Thunderbird';
get_kb_item_or_exit(kb_base+'/Installed');
var version = get_kb_item_or_exit(kb_base+'/Version', exit_code:1);
var path = get_kb_item_or_exit(kb_base+'/Path', exit_code:1);
var is_esr = get_kb_item(kb_base+'/is_esr');
if (is_esr) exit(0, 'The Mozilla Thunderbird installation is in the ESR branch.');
mozilla_check_version(version:version, path:path, product:'thunderbird', esr:FALSE, fix:'91.2', severity:SECURITY_WARNING);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32810
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38496
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38497
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38498
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38500
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38501
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38502
www.mozilla.org/en-US/security/advisories/mfsa2021-47/
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
EPSS
Percentile
82.8%