CVE-2018-12983

Una sobrelectura de búfer basado en la pila de memoria en la función PdfEncryptMD5Base::ComputeEncryptionKey() en PdfEncrypt.cpp en PoDoFo 0.9.6-rc1 podría utilizarse por atacantes remotos para provocar una denegación de servicio (DoS) mediante un archivo pdf manipulado.

It was discovered that the PoDoFo library could dereference a NULL pointer when getting the number of pages in a PDF. If a user or application were tricked into opening a crafted PDF file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that PoDoFo library incorrectly handled memory when computing an encryption key, which could lead to a buffer overflow. If a user or application were tricked into opening a crafted PDF file, an attacker could possibly use this issue to cause a denial of service.