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
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
AI Score
Confidence
High
EPSS
Percentile
87.8%
The version of Thunderbird installed on the remote Windows host is prior to 78.13. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-35 advisory.
A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. Note: This issue only affected Linux operating systems. Other operating systems are unaffected. (CVE-2021-29986)
Thunderbird incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. (CVE-2021-29988)
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
(CVE-2021-29984)
Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. (CVE-2021-29980)
A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. (CVE-2021-29985)
Mozilla developers Christoph Kerschbaumer, Simon Giesecke, Sandor Molnar, and Olli Pettay reported memory safety bugs present in Thunderbird 78.12. 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-2021-29989)
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 mfsa2021-35.
# The text itself is copyright (C) Mozilla Foundation.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(152452);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");
script_cve_id(
"CVE-2021-29980",
"CVE-2021-29984",
"CVE-2021-29985",
"CVE-2021-29986",
"CVE-2021-29988",
"CVE-2021-29989"
);
script_name(english:"Mozilla Thunderbird < 78.13");
script_set_attribute(attribute:"synopsis", value:
"A mail client installed on the remote Windows host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Thunderbird installed on the remote Windows host is prior to 78.13. It is, therefore, affected by
multiple vulnerabilities as referenced in the mfsa2021-35 advisory.
- A suspected race condition when calling getaddrinfo led to memory corruption and a
potentially exploitable crash. Note: This issue only affected Linux operating systems. Other operating
systems are unaffected. (CVE-2021-29986)
- Thunderbird incorrectly treated an inline list-item element as a block element, resulting in an out of
bounds read or memory corruption, and a potentially exploitable crash. (CVE-2021-29988)
- Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly
considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
(CVE-2021-29984)
- Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption
and a potentially exploitable crash. (CVE-2021-29980)
- A use-after-free vulnerability in media channels could have led to memory corruption and a potentially
exploitable crash. (CVE-2021-29985)
- Mozilla developers Christoph Kerschbaumer, Simon Giesecke, Sandor Molnar, and Olli Pettay reported memory
safety bugs present in Thunderbird 78.12. 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-2021-29989)
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/mfsa2021-35/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Thunderbird version 78.13 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:POC/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:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-29989");
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:"2021/08/10");
script_set_attribute(attribute:"patch_publication_date", value:"2021/08/10");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/11");
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:"Windows");
script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("mozilla_org_installed.nasl");
script_require_keys("Mozilla/Thunderbird/Version");
exit(0);
}
include('mozilla_version.inc');
port = get_kb_item('SMB/transport');
if (!port) port = 445;
installs = get_kb_list('SMB/Mozilla/Thunderbird/*');
if (isnull(installs)) audit(AUDIT_NOT_INST, 'Thunderbird');
mozilla_check_version(installs:installs, product:'thunderbird', esr:FALSE, fix:'78.13', severity:SECURITY_WARNING);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29980
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29984
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29985
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29986
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29988
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29989
www.mozilla.org/en-US/security/advisories/mfsa2021-35/
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
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
AI Score
Confidence
High
EPSS
Percentile
87.8%