CVE-2020-6822

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

Description The issue is related to an out of bounds write that could occur when processing an image larger than 4 GB in GMPDecodeData. This could potentially be exploited to run arbitrary code. The vulnerability is associated with a buffer overflow in memory, which may allow a remote attacker to execute arbitrary code using a specially crafted image.

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