KLA11924 Multiple vulnerabilities in Mozilla Thunderbird

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to obtain sensitive information, bypass security restrictions, cause denial of service, execute arbitrary code.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in ANGLE component can be exploited to potentially cause denial of service.
2. Implementation vulnerability in WebRTC can be exploited to potentially cause denial of service.
3. Security vulnerability can be exploited to obtain sensitive information and bypass security restrictions.
4. Memory safety vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2020-34

Exploitation

Public exploits exist for this vulnerability.

Related products

Mozilla-Thunderbird

CVE list

CVE-2020-6463 critical

CVE-2020-6514 high

CVE-2020-15652 high

CVE-2020-15659 critical

Solution

Update to the latest version

Download Thunderbird

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

Affected Products

• Mozilla Thunderbird earlier than 68.11