CVE-2020-6821

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 75 Firefox ESR versions prior to 68.7 Thunderbird versions prior to 68.7.0

Description The issue is related to the WebGL's copyTexSubImage method, where reading from areas outside the source resource could lead to potentially sensitive data disclosure due to uninitialized memory. This could result in the exposure of sensitive information.

Recommendations For Firefox versions prior to 75, update to version 75 or later. For Firefox ESR versions prior to 68.7, update to version 68.7 or later. For Thunderbird versions prior to 68.7.0, update to version 68.7.0 or later.