2025-03-31
ALT-BU-2025-4974-1
Branch sisyphus update bulletin.
Package firefox-esr updated to version 128.8.1-alt1 for branch sisyphus in task 379697.
Closed vulnerabilities
Published: 2025-03-27
Modified: 2025-03-28
Modified: 2025-03-28
CVE-2025-2857
Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.
References: