CVE-2020-13398

Se detectó un problema en FreeRDP versiones anteriores a 2.1.1. Ha sido detectada una vulnerabilidad de escritura fuera de límites (OOB) en la función crypto_rsa_common en el archivo libfreerdp/crypto/crypto.c.

An issue was found in freerdp's libfreerdp/crypto/crypto.c, in versions before 2.1.1, where buffer access with an incorrect length value, leads to an out-of-bounds write. This flaw allows a remote, unauthenticated, attacker running an RDP server, or a local attacker, using a specially crafted certificate, to cause an out-of-bounds write into client process memory, corrupting the integrity of the data used in the RSA encryption functionality, or causing a denial of service.

FreeRDP is a free implementation of the Remote Desktop Protocol, released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Issues addressed include an out of bounds write vulnerability.