Ubuntu 20.04 LTS USN-6510-1 critical: Firefox regression fixes

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: USN-6509-1 caused some minor regressions in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-6509-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. (CVE-2023-6206, CVE-2023-6210, CVE-2023-6211, CVE-2023-6212, CVE-2023-6213) It was discovered that Firefox did not properly manage memory when images were created on the canvas element. An attacker could potentially exploit this issue to obtain sensitive inform...