CVE-2022-26386

Anteriormente, Firefox para macOS y Linux descargaba archivos temporales a un directorio específico del usuario en <code>/tmp</code>, pero este comportamiento se cambió para descargarlos a <code>/tmp</code> donde podrían verse afectados. por otros usuarios locales. Este comportamiento se revirtió al directorio original específico del usuario. <br>*Este error solo afecta a Firefox para macOS y Linux. Otros sistemas operativos no se ven afectados.*. Esta vulnerabilidad afecta a Firefox ESR &lt; 91,7 y Thunderbird &lt; 91.7.

The Mozilla Foundation Security Advisory describes this flaw as: Previously Thunderbird for macOS and Linux would download temporary files to a user-specific directory in /tmp, but this behavior was changed to download them to /tmp where they could be affected by other local users. This behavior was reverted to the original, user-specific directory.

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass security restrictions, obtain sensitive information, cause undefined behaviour, spoof the browser UI, or execute arbitrary code. It was discovered that extensions of a particular type could auto-update themselves and bypass the prompt that requests permissions. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to bypass security restrictions.