CVE-2023-6861

Summary

CVE-2023-6861 is a recently disclosed heap buffer overflow vulnerability affecting Firefox ESR versions below 115.6, Thunderbird versions below 115.6, and Firefox versions below 121. This issue lies in the `nsWindow::PickerOpen(void)` method, which becomes susceptible to buffer overflow attacks when Firefox is running in headless mode. This vulnerability poses a potential risk for attackers to execute arbitrary code and potentially gain unauthorized access to user data or take control of the affected system. It is highly recommended that users update their installed versions of Firefox ESR, Thunderbird, and Firefox to mitigate this risk.

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