KLA11730 Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

1. Memory corruption vulnerability can be exploited to execute arbitrary code.
2. Use after free vulnerability in nsDocShell destructor can be exploited to cause denial of service.
3. Uninitialized memory vulnerability in WebGL can be exploited to potentially obtain sensitive information.
4. Out of bounds write vulnerability in GMPDecodeData can be exploited to execute arbitrary code.
5. Use after free vulnerability in ReadableStream can be exploited to cause denial of service.

Original advisories

mfsa2020-14

Exploitation

Public exploits exist for this vulnerability.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Mozilla-Thunderbird

CVE list

CVE-2020-6819 critical

CVE-2020-6820 critical

CVE-2020-6822 critical

CVE-2020-6825 critical

CVE-2020-6821 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.

Affected Products

• Mozilla Thunderbird earlier than 68.7