Debian update for thunderbird

Published: 2020-03-20 | Updated: 2021-07-01

Risk	High
Patch available	YES
Number of vulnerabilities	7
CVE-ID	CVE-2019-20503 CVE-2020-6805 CVE-2020-6806 CVE-2020-6807 CVE-2020-6811 CVE-2020-6812 CVE-2020-6814
CWE-ID	CWE-125 CWE-416 CWE-20 CWE-200 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	thunderbird (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU25856

Risk: Medium

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20503

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in sctp_load_addresses_from_init in usrsctp. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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) Use-after-free

EUVDB-ID: #VU25849

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6805

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when removing data about origins in Quota manager in Mozilla Firefox. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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) Out-of-bounds read

EUVDB-ID: #VU25850

Risk: High

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6806

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to an out-of-bounds read error due to BodyStream::OnInputStreamReady was missing protections against state confusion. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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) Use-after-free

EUVDB-ID: #VU25851

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6807

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in cubeb during stream destruction. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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) Input validation error

EUVDB-ID: #VU25855

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6811

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary OS commands.

The vulnerability exists due to insufficient validation of user-supplied input copied into buffer via the 'Copy as cURL' feature of Devtools' network tab. A remote attacker can trick the victim into using the 'Copy as cURL' feature to copy malicious data into buffer and later insert them into a terminal window.

Successful exploitation of the vulnerability may result in OS command execution.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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

EUVDB-ID: #VU25857

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6812

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The first time AirPods are connected to an iPhone, they become named after the user's name by default (e.g. Jane Doe's AirPods.) Websites with camera or microphone permission are able to enumerate device names, disclosing the user's name.

Mitigation

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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) Buffer overflow

EUVDB-ID: #VU25859

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6814

CWE-ID: CWE-119 - Memory corruption

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

Update thunderbird package to one of the following versions: 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package): 1:60.0-1 - 1:68.5.0-1~deb10u1

CPE2.3

External links

http://www.debian.org/security/2020/dsa-4642

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.