CVE-2017-7756

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 54 Firefox ESR versions prior to 52.2 Thunderbird versions prior to 52.2

Description A use-after-free and use-after-scope issue exists when logging errors from headers for XML HTTP Requests (XHR), potentially leading to a crash. This could be exploited by a remote attacker to cause a denial of service.

Recommendations For Firefox versions prior to 54, update to version 54 or later to resolve the issue. For Firefox ESR versions prior to 52.2, update to version 52.2 or later to resolve the issue. For Thunderbird versions prior to 52.2, update to version 52.2 or later to resolve the issue.