KLA12319 Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

1. An use after free vulnerability in MessageTask can be exploited to cause denial of service.
2. A memory safety vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2021-46

Related products

Mozilla-Thunderbird

CVE list

CVE-2021-38496 unknown

CVE-2021-38500 unknown

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.

Affected Products

• Mozilla Thunderbird earlier than 78.15