CVE-2023-6861

El método `nsWindow::PickerOpen(void)` era susceptible a un desbordamiento de búfer de almacenamiento dinámico cuando se ejecutaba en modo headless. Esta vulnerabilidad afecta a Firefox ESR <115.6, Thunderbird <115.6 y Firefox <121.

The Mozilla Foundation Security Advisory describes this flaw as: The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless mode.

USN-6562-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. 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. DoHyun Lee discovered that Firefox did not properly manage memory when used on systems with the Mesa VM driver. An attacker could potentially exploit this issue to execute arbitrary code. George Pantela and Hubert Kario discovered that Firefox using multiple NSS NIST curves which were susceptible to a side-channel attack known as "Minerva". An attacker could potentially exploit this issue to obtain sensitive information. Andrew Osmond discovered that Firefox did not properly validate the textures produced by remote decoders. An attacker could potentially exploit this issue to escape the sandbox.