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nessusThis script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.MACOS_THUNDERBIRD_78_8.NASL
HistoryFeb 23, 2021 - 12:00 a.m.

Mozilla Thunderbird < 78.8

2021-02-2300:00:00
This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
26
thunderbird
macos
content security policy
cross-origin resource
memory safety bugs
vulnerability
mfsa2021-09 advisory

CVSS2

6.8

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

8.8

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

0.011

Percentile

84.5%

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 78.8. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-09 advisory.

  • As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If thats not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types of redirects, Thunderbird incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination’s origin. (CVE-2021-23969)

  • If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. (CVE-2021-23968)

  • When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. (CVE-2021-23973)

  • Mozilla developers Alexis Beingessner, Tyson Smith, Nika Layzell, and Mats Palmgren reported memory safety bugs present in Thunderbird 78.7. 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-2021-23978)

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 mfsa2021-09.
# The text itself is copyright (C) Mozilla Foundation.
##

include('compat.inc');

if (description)
{
  script_id(146784);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/05");

  script_cve_id(
    "CVE-2021-23968",
    "CVE-2021-23969",
    "CVE-2021-23973",
    "CVE-2021-23978"
  );

  script_name(english:"Mozilla Thunderbird < 78.8");

  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 78.8. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2021-09 advisory.

  - As specified in the W3C Content Security Policy draft, when creating a violation report, User agents need
    to ensure that the source file is the URL requested by the page, pre-redirects. If thats not possible,
    user agents need to strip the URL down to an origin to avoid unintentional leakage. Under certain types
    of redirects, Thunderbird incorrectly set the source file to be the destination of the redirects. This was
    fixed to be the redirect destination's origin. (CVE-2021-23969)

  - If Content Security Policy blocked frame navigation, the full destination of a redirect served in the
    frame was reported in the violation report; as opposed to the original frame URI. This could be used to
    leak sensitive information contained in such URIs. (CVE-2021-23968)

  - When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted,
    and the content of that error may have revealed information about the resource. (CVE-2021-23973)

  - Mozilla developers Alexis Beingessner, Tyson Smith, Nika Layzell, and Mats Palmgren reported memory safety
    bugs present in Thunderbird 78.7. 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-2021-23978)

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/mfsa2021-09/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Thunderbird version 78.8 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:R/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-2021-23978");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:thunderbird");
  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_thunderbird_installed.nasl");
  script_require_keys("MacOSX/Thunderbird/Installed");

  exit(0);
}

include('mozilla_version.inc');

kb_base = 'MacOSX/Thunderbird';
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 (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:'78.8', severity:SECURITY_WARNING);

CVSS2

6.8

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

8.8

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

0.011

Percentile

84.5%