Integer overflows in otrl_base64_otr_encode
otrl_base64_otr_encode : For a large buflen, the additions and multiplications in the allocation below can overflow, leading to a smaller than expected memory buffer being allocated, causing a heap buffer overflow in otrl_base64_encode.
/* Make the base64-encoding. */ base64len = ((buflen + 2) / 3) * 4;
(from redmine: created on 2014-11-14, closed on 2014-11-14)