KLA12227 Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

1. A memory safety vulnerability can be exploited to execute arbitrary code.
2. A security UI vulnerability can be exploited to spoof user interface.
3. An out of bounds write vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.
4. A use after free vulnerability can be exploited via special crafted webpage to cause denial of service or execute arbitrary code.

Original advisories

MFSA2021-30

Related products

Mozilla-Thunderbird

CVE list

CVE-2021-30547 critical

CVE-2021-29976 critical

CVE-2021-29969 high

CVE-2021-29970 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.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Mozilla Thunderbird earlier than 78.12