CVE-2020-12420

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 78 Firefox ESR versions prior to 68.10 Thunderbird versions prior to 68.10.0

Description A race condition could cause a use-after-free of a pointer when trying to connect to a STUN server, leading to memory corruption and a potentially exploitable crash. This issue may allow a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.

Recommendations For Firefox versions prior to 78, update to version 78 or later. For Firefox ESR versions prior to 68.10, update to version 68.10 or later. For Thunderbird versions prior to 68.10.0, update to version 68.10.0 or later.