Multiple vulnerabilities in Mozilla Thunderbird



Published: 2020-12-15
Risk High
Patch available YES
Number of vulnerabilities 8
CVE ID CVE-2020-16042
CVE-2020-26971
CVE-2020-26973
CVE-2020-26974
CVE-2020-26978
CVE-2020-35111
CVE-2020-35112
CVE-2020-35113
CWE ID CWE-908
CWE-122
CWE-20
CWE-843
CWE-264
CWE-200
CWE-19
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Mozilla Thunderbird
Client/Desktop applications / Messaging software

Vendor Mozilla

Security Advisory

1) Use of uninitialized resource

Risk: Medium

CVSSv3: 4.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-16042

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to usage of uninitialized resources in V8 in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger uninitialized usage of resources and bypass implemented security mechanisms.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-26971

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within WebGL component. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

Risk: Medium

CVSSv3: 4.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-26973

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input within CSS Sanitizer. A remote attacker can create a specially crafted web page, trick the victim into visiting it, and bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Type Confusion

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-26974

CWE-ID: CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error. When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Permissions, Privileges, and Access Controls

Risk: Medium

CVSSv3: 5.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-26978

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to application does not properly impose security restrictions. A remote attacker can create a specially crafted webpage and send probes to hosts in internal network as well as to services on the user's local machine.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Information disclosure

Risk: Medium

CVSSv3: 4.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-35111

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the proxy.onRequest API does not use proxy when viewing source code of the web application. A remote attacker, who controls the web server can obtain user's real IP address, if the user decides to view the web application source code while behind a proxy server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Data handling

Risk: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-35112

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to the way Firefox processes downloaded files without extensions on Windows operating system. If a user downloaded a file lacking an extension on Windows, and then "Open"-ed it from the downloads panel, if there was an executable file in the downloads directory with the same name but with an executable extension (such as .bat or .exe) that executable would have been launched instead.

The vulnerability affects Windows installations only.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Buffer overflow

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-35113

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0, 60.2.1, 60.3, 60.3.0, 60.3.1, 60.3.2, 60.3.3, 60.4, 60.4.0, 60.5, 60.5.0, 60.5.1, 60.5.2, 60.5.3, 60.6.0, 60.6.1, 60.7.0, 60.7.1, 60.7.2, 60.8.0, 60.9.0, 60.9.1, 68.0, 68.1.0, 68.1.1, 68.1.2, 68.2.0, 68.2.1, 68.2.2, 68.3.0, 68.3.1, 68.4.1, 68.4.2, 68.5.0, 68.6.0, 68.7.0, 68.8.0, 68.8.1, 68.9.0, 68.10.0, 68.11.0, 68.12.0, 68.12.1, 78.0, 78.0.1, 78.1.0, 78.1.1, 78.2.0, 78.2.1, 78.2.2, 78.3.0, 78.3.1, 78.3.2, 78.3.3, 78.4.0, 78.4.1, 78.4.2, 78.4.3, 78.5.0, 78.5.1

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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