Heather Miller

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 53 Firefox ESR versions prior to 52.1 Thunderbird versions prior to 52.1 **Description** The issue is related to a memory buffer overflow in the Skia graphics library, which can cause a denial of service. It occurs when drawing content outside the bounds of a clipping region, potentially leading to memory corruption and a crash. **Recommendations** For Firefox versions prior to 53, update to version 53 or later to resolve the issue. For Firefox ESR versions prior to 52.1, update to version 52.1 or later to resolve the issue. For Thunderbird versions prior to 52.1, update to version 52.1 or later to resolve the issue.