KLA11987 Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebRTC can be exploited to cause denial of service and bypass security restrictions.
2. Memory vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2020-47

Related products

Mozilla-Thunderbird

CVE list

CVE-2020-15969 critical

CVE-2020-15683 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.

• 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 78.4