Security Advisory
CVE-2020-6821
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
When reading from areas partially or fully outside the source resource with WebGLs <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.