Security Advisory

1) Buffer overflow

Severity: 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-2020-12410

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 web page, 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: 1:68.9.0-1~deb9u1, 1:68.9.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package):
1:60.0-1, 1:60.0-2, 1:60.0-2~deb9u1, 1:60.0-3, 1:60.0-3~deb9u1, 1:60.0~b2-1, 1:60.0~b3-1, 1:60.0~b4-1, 1:60.0~b5-1, 1:60.0~b6-1, 1:60.0~b9-1, 1:60.0~b9-2, 1:60.0~b10-1, 1:60.2.1-1, 1:60.2.1-2~deb9u1, 1:60.3.0-1, 1:60.3.0-1+b1, 1:60.3.0-1~deb8u1, 1:60.3.0-1~deb9u1, 1:60.3.1-1, 1:60.4.0-1, 1:60.4.0-1~deb8u1, 1:60.4.0-1~deb9u1, 1:60.5.0-1, 1:60.5.0-2, 1:60.5.0-3, 1:60.5.1-1, 1:60.5.1-1~deb8u1, 1:60.5.1-1~deb9u1, 1:60.6.1-1, 1:60.6.1-1~deb8u1, 1:60.6.1-1~deb9u1, 1:60.7.0-1, 1:60.7.0-1~deb8u1, 1:60.7.0-1~deb9u1, 1:60.7.1-1, 1:60.7.1-1~deb8u1, 1:60.7.1-1~deb9u1, 1:60.7.2-1, 1:60.7.2-1~deb8u1, 1:60.7.2-1~deb9u1, 1:60.8.0-1, 1:60.8.0-1~deb8u1, 1:60.8.0-1~deb9u1, 1:60.8.0-1~deb10u1, 1:60.8.0-2, 1:60.9.0-1, 1:60.9.0-1~deb8u1, 1:60.9.0-1~deb9u1, 1:60.9.0-1~deb10u1, 1:65.0~b1-1, 1:66.0~b1-1, 1:67.0~b3-1, 1:68.0~b1-1, 1:68.1.1-1~exp1, 1:68.1.2-1~exp1, 1:68.2.1-1, 1:68.2.2-1, 1:68.2.2-1+b1, 1:68.2.2-1~deb8u1, 1:68.2.2-1~deb9u1, 1:68.2.2-1~deb10u1, 1:68.3.0-1, 1:68.3.0-2, 1:68.3.0-2~deb8u1, 1:68.3.0-2~deb9u1, 1:68.3.0-2~deb10u1, 1:68.3.1-1, 1:68.4.1-1, 1:68.4.1-1+b1, 1:68.4.1-1~deb8u1, 1:68.4.1-1~deb9u1, 1:68.4.1-1~deb10u1, 1:68.4.2-1, 1:68.5.0-1, 1:68.5.0-1+b1, 1:68.5.0-1~deb8u1, 1:68.5.0-1~deb9u1, 1:68.5.0-1~deb10u1, 1:68.6.0-1, 1:68.6.0-1~deb8u1, 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1, 1:68.7.0-1, 1:68.7.0-1~deb8u1, 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1, 1:68.8.0-1, 1:68.8.0-1~deb8u1, 1:68.8.0-1~deb9u1, 1:68.8.0-1~deb10u1, 1:68.8.1-1, 1:68.8.1-1+b1

CPE

External links

https://www.debian.org/security/2020/dsa-4702

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) Type Confusion

Severity: 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-2020-12406

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 during unboxed JavaScript objects removal. A remote attacker can create a specially crafted web page, trick the victim into opening 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

Update thunderbird package to one of the following versions: 1:68.9.0-1~deb9u1, 1:68.9.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package):
1:60.0-1, 1:60.0-2, 1:60.0-2~deb9u1, 1:60.0-3, 1:60.0-3~deb9u1, 1:60.0~b2-1, 1:60.0~b3-1, 1:60.0~b4-1, 1:60.0~b5-1, 1:60.0~b6-1, 1:60.0~b9-1, 1:60.0~b9-2, 1:60.0~b10-1, 1:60.2.1-1, 1:60.2.1-2~deb9u1, 1:60.3.0-1, 1:60.3.0-1+b1, 1:60.3.0-1~deb8u1, 1:60.3.0-1~deb9u1, 1:60.3.1-1, 1:60.4.0-1, 1:60.4.0-1~deb8u1, 1:60.4.0-1~deb9u1, 1:60.5.0-1, 1:60.5.0-2, 1:60.5.0-3, 1:60.5.1-1, 1:60.5.1-1~deb8u1, 1:60.5.1-1~deb9u1, 1:60.6.1-1, 1:60.6.1-1~deb8u1, 1:60.6.1-1~deb9u1, 1:60.7.0-1, 1:60.7.0-1~deb8u1, 1:60.7.0-1~deb9u1, 1:60.7.1-1, 1:60.7.1-1~deb8u1, 1:60.7.1-1~deb9u1, 1:60.7.2-1, 1:60.7.2-1~deb8u1, 1:60.7.2-1~deb9u1, 1:60.8.0-1, 1:60.8.0-1~deb8u1, 1:60.8.0-1~deb9u1, 1:60.8.0-1~deb10u1, 1:60.8.0-2, 1:60.9.0-1, 1:60.9.0-1~deb8u1, 1:60.9.0-1~deb9u1, 1:60.9.0-1~deb10u1, 1:65.0~b1-1, 1:66.0~b1-1, 1:67.0~b3-1, 1:68.0~b1-1, 1:68.1.1-1~exp1, 1:68.1.2-1~exp1, 1:68.2.1-1, 1:68.2.2-1, 1:68.2.2-1+b1, 1:68.2.2-1~deb8u1, 1:68.2.2-1~deb9u1, 1:68.2.2-1~deb10u1, 1:68.3.0-1, 1:68.3.0-2, 1:68.3.0-2~deb8u1, 1:68.3.0-2~deb9u1, 1:68.3.0-2~deb10u1, 1:68.3.1-1, 1:68.4.1-1, 1:68.4.1-1+b1, 1:68.4.1-1~deb8u1, 1:68.4.1-1~deb9u1, 1:68.4.1-1~deb10u1, 1:68.4.2-1, 1:68.5.0-1, 1:68.5.0-1+b1, 1:68.5.0-1~deb8u1, 1:68.5.0-1~deb9u1, 1:68.5.0-1~deb10u1, 1:68.6.0-1, 1:68.6.0-1~deb8u1, 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1, 1:68.7.0-1, 1:68.7.0-1~deb8u1, 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1, 1:68.8.0-1, 1:68.8.0-1~deb8u1, 1:68.8.0-1~deb9u1, 1:68.8.0-1~deb10u1, 1:68.8.1-1, 1:68.8.1-1+b1

CPE

External links

https://www.debian.org/security/2020/dsa-4702

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) Use-after-free

Severity: 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-2020-12405

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 in SharedWorkerService due to a race condition. A remote attacker can create a specially crafted web page, trick the victim into opening 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: 1:68.9.0-1~deb9u1, 1:68.9.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package):
1:60.0-1, 1:60.0-2, 1:60.0-2~deb9u1, 1:60.0-3, 1:60.0-3~deb9u1, 1:60.0~b2-1, 1:60.0~b3-1, 1:60.0~b4-1, 1:60.0~b5-1, 1:60.0~b6-1, 1:60.0~b9-1, 1:60.0~b9-2, 1:60.0~b10-1, 1:60.2.1-1, 1:60.2.1-2~deb9u1, 1:60.3.0-1, 1:60.3.0-1+b1, 1:60.3.0-1~deb8u1, 1:60.3.0-1~deb9u1, 1:60.3.1-1, 1:60.4.0-1, 1:60.4.0-1~deb8u1, 1:60.4.0-1~deb9u1, 1:60.5.0-1, 1:60.5.0-2, 1:60.5.0-3, 1:60.5.1-1, 1:60.5.1-1~deb8u1, 1:60.5.1-1~deb9u1, 1:60.6.1-1, 1:60.6.1-1~deb8u1, 1:60.6.1-1~deb9u1, 1:60.7.0-1, 1:60.7.0-1~deb8u1, 1:60.7.0-1~deb9u1, 1:60.7.1-1, 1:60.7.1-1~deb8u1, 1:60.7.1-1~deb9u1, 1:60.7.2-1, 1:60.7.2-1~deb8u1, 1:60.7.2-1~deb9u1, 1:60.8.0-1, 1:60.8.0-1~deb8u1, 1:60.8.0-1~deb9u1, 1:60.8.0-1~deb10u1, 1:60.8.0-2, 1:60.9.0-1, 1:60.9.0-1~deb8u1, 1:60.9.0-1~deb9u1, 1:60.9.0-1~deb10u1, 1:65.0~b1-1, 1:66.0~b1-1, 1:67.0~b3-1, 1:68.0~b1-1, 1:68.1.1-1~exp1, 1:68.1.2-1~exp1, 1:68.2.1-1, 1:68.2.2-1, 1:68.2.2-1+b1, 1:68.2.2-1~deb8u1, 1:68.2.2-1~deb9u1, 1:68.2.2-1~deb10u1, 1:68.3.0-1, 1:68.3.0-2, 1:68.3.0-2~deb8u1, 1:68.3.0-2~deb9u1, 1:68.3.0-2~deb10u1, 1:68.3.1-1, 1:68.4.1-1, 1:68.4.1-1+b1, 1:68.4.1-1~deb8u1, 1:68.4.1-1~deb9u1, 1:68.4.1-1~deb10u1, 1:68.4.2-1, 1:68.5.0-1, 1:68.5.0-1+b1, 1:68.5.0-1~deb8u1, 1:68.5.0-1~deb9u1, 1:68.5.0-1~deb10u1, 1:68.6.0-1, 1:68.6.0-1~deb8u1, 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1, 1:68.7.0-1, 1:68.7.0-1~deb8u1, 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1, 1:68.8.0-1, 1:68.8.0-1~deb8u1, 1:68.8.0-1~deb9u1, 1:68.8.0-1~deb10u1, 1:68.8.1-1, 1:68.8.1-1+b1

CPE

External links

https://www.debian.org/security/2020/dsa-4702

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) Race condition

Severity: Medium

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

CVE-ID:
CVE-2020-12399

CWE-ID:
CWE-362 – Concurrent Execution using Shared Resource with Improper Synchronization (‘Race Condition’)

Exploit availability:
No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to time differences in Mozilla NSS library during the process of generating a DSA signature, the nonce value ‘k’ is not padded, exposing the bit length. Combined with other techniques, this can result in the recovery of the DSA private key.

Mitigation

Update thunderbird package to one of the following versions: 1:68.9.0-1~deb9u1, 1:68.9.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package):
1:60.0-1, 1:60.0-2, 1:60.0-2~deb9u1, 1:60.0-3, 1:60.0-3~deb9u1, 1:60.0~b2-1, 1:60.0~b3-1, 1:60.0~b4-1, 1:60.0~b5-1, 1:60.0~b6-1, 1:60.0~b9-1, 1:60.0~b9-2, 1:60.0~b10-1, 1:60.2.1-1, 1:60.2.1-2~deb9u1, 1:60.3.0-1, 1:60.3.0-1+b1, 1:60.3.0-1~deb8u1, 1:60.3.0-1~deb9u1, 1:60.3.1-1, 1:60.4.0-1, 1:60.4.0-1~deb8u1, 1:60.4.0-1~deb9u1, 1:60.5.0-1, 1:60.5.0-2, 1:60.5.0-3, 1:60.5.1-1, 1:60.5.1-1~deb8u1, 1:60.5.1-1~deb9u1, 1:60.6.1-1, 1:60.6.1-1~deb8u1, 1:60.6.1-1~deb9u1, 1:60.7.0-1, 1:60.7.0-1~deb8u1, 1:60.7.0-1~deb9u1, 1:60.7.1-1, 1:60.7.1-1~deb8u1, 1:60.7.1-1~deb9u1, 1:60.7.2-1, 1:60.7.2-1~deb8u1, 1:60.7.2-1~deb9u1, 1:60.8.0-1, 1:60.8.0-1~deb8u1, 1:60.8.0-1~deb9u1, 1:60.8.0-1~deb10u1, 1:60.8.0-2, 1:60.9.0-1, 1:60.9.0-1~deb8u1, 1:60.9.0-1~deb9u1, 1:60.9.0-1~deb10u1, 1:65.0~b1-1, 1:66.0~b1-1, 1:67.0~b3-1, 1:68.0~b1-1, 1:68.1.1-1~exp1, 1:68.1.2-1~exp1, 1:68.2.1-1, 1:68.2.2-1, 1:68.2.2-1+b1, 1:68.2.2-1~deb8u1, 1:68.2.2-1~deb9u1, 1:68.2.2-1~deb10u1, 1:68.3.0-1, 1:68.3.0-2, 1:68.3.0-2~deb8u1, 1:68.3.0-2~deb9u1, 1:68.3.0-2~deb10u1, 1:68.3.1-1, 1:68.4.1-1, 1:68.4.1-1+b1, 1:68.4.1-1~deb8u1, 1:68.4.1-1~deb9u1, 1:68.4.1-1~deb10u1, 1:68.4.2-1, 1:68.5.0-1, 1:68.5.0-1+b1, 1:68.5.0-1~deb8u1, 1:68.5.0-1~deb9u1, 1:68.5.0-1~deb10u1, 1:68.6.0-1, 1:68.6.0-1~deb8u1, 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1, 1:68.7.0-1, 1:68.7.0-1~deb8u1, 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1, 1:68.8.0-1, 1:68.8.0-1~deb8u1, 1:68.8.0-1~deb9u1, 1:68.8.0-1~deb10u1, 1:68.8.1-1, 1:68.8.1-1+b1

CPE

External links

https://www.debian.org/security/2020/dsa-4702

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) Cleartext transmission of sensitive information

Severity: 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-2020-12398

CWE-ID:
CWE-319 – Cleartext Transmission of Sensitive Information

Exploit availability:
No

Description

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

The vulnerability exists in STARTTLS implementation for an IMAP, when the server sends  a PREAUTH response. In this case Thunderbird will continue with an unencrypted connection,
causing email data to be sent without protection.

Mitigation

Update thunderbird package to one of the following versions: 1:68.9.0-1~deb9u1, 1:68.9.0-1~deb10u1.

Vulnerable software versions

thunderbird (Debian package):
1:60.0-1, 1:60.0-2, 1:60.0-2~deb9u1, 1:60.0-3, 1:60.0-3~deb9u1, 1:60.0~b2-1, 1:60.0~b3-1, 1:60.0~b4-1, 1:60.0~b5-1, 1:60.0~b6-1, 1:60.0~b9-1, 1:60.0~b9-2, 1:60.0~b10-1, 1:60.2.1-1, 1:60.2.1-2~deb9u1, 1:60.3.0-1, 1:60.3.0-1+b1, 1:60.3.0-1~deb8u1, 1:60.3.0-1~deb9u1, 1:60.3.1-1, 1:60.4.0-1, 1:60.4.0-1~deb8u1, 1:60.4.0-1~deb9u1, 1:60.5.0-1, 1:60.5.0-2, 1:60.5.0-3, 1:60.5.1-1, 1:60.5.1-1~deb8u1, 1:60.5.1-1~deb9u1, 1:60.6.1-1, 1:60.6.1-1~deb8u1, 1:60.6.1-1~deb9u1, 1:60.7.0-1, 1:60.7.0-1~deb8u1, 1:60.7.0-1~deb9u1, 1:60.7.1-1, 1:60.7.1-1~deb8u1, 1:60.7.1-1~deb9u1, 1:60.7.2-1, 1:60.7.2-1~deb8u1, 1:60.7.2-1~deb9u1, 1:60.8.0-1, 1:60.8.0-1~deb8u1, 1:60.8.0-1~deb9u1, 1:60.8.0-1~deb10u1, 1:60.8.0-2, 1:60.9.0-1, 1:60.9.0-1~deb8u1, 1:60.9.0-1~deb9u1, 1:60.9.0-1~deb10u1, 1:65.0~b1-1, 1:66.0~b1-1, 1:67.0~b3-1, 1:68.0~b1-1, 1:68.1.1-1~exp1, 1:68.1.2-1~exp1, 1:68.2.1-1, 1:68.2.2-1, 1:68.2.2-1+b1, 1:68.2.2-1~deb8u1, 1:68.2.2-1~deb9u1, 1:68.2.2-1~deb10u1, 1:68.3.0-1, 1:68.3.0-2, 1:68.3.0-2~deb8u1, 1:68.3.0-2~deb9u1, 1:68.3.0-2~deb10u1, 1:68.3.1-1, 1:68.4.1-1, 1:68.4.1-1+b1, 1:68.4.1-1~deb8u1, 1:68.4.1-1~deb9u1, 1:68.4.1-1~deb10u1, 1:68.4.2-1, 1:68.5.0-1, 1:68.5.0-1+b1, 1:68.5.0-1~deb8u1, 1:68.5.0-1~deb9u1, 1:68.5.0-1~deb10u1, 1:68.6.0-1, 1:68.6.0-1~deb8u1, 1:68.6.0-1~deb9u1, 1:68.6.0-1~deb10u1, 1:68.7.0-1, 1:68.7.0-1~deb8u1, 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1, 1:68.8.0-1, 1:68.8.0-1~deb8u1, 1:68.8.0-1~deb9u1, 1:68.8.0-1~deb10u1, 1:68.8.1-1, 1:68.8.1-1+b1

CPE

External links

https://www.debian.org/security/2020/dsa-4702

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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