CVE-2018-5129

La falta de validación de parámetros en los mensajes IPC resulta en una potencial escritura fuera de límites a través de mensajes IPC mal formados. Esto puede permitir un escape de sandbox mediante la corrupción de memoria en el proceso padre. Esta vulnerabilidad afecta a las versiones anteriores a la 52.7 de Thunderbird, las versiones anteriores a la 52.7 de Firefox ESR y las versiones anteriores a la 59 de Firefox.

USN-3596-1 fixed vulnerabilities in Firefox. The update caused an issue where it was not possible to customize the toolbars when running Firefox in Unity. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash or opening new tabs, escape the sandbox, bypass same-origin restrictions, obtain sensitive information, confuse the user with misleading permission requests, or execute arbitrary code. It was discovered that the fetch API could incorrectly return cached copies of no-store/no-cache resources in some circumstances. A local attacker could potentially exploit this to obtain sensitive information in environments where multiple users share a common profile. Various other issues were also addressed.