Samba versions greater or equal to 2.2.29 and 3.0.0 have a buffer overrun located in the code used to support the mangling method = hash smb.conf option. Versions 3.0.2 suffer from buffer overrun in an internal routine used to decode base64 data during HTTP basic authentication.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33848/sambaOverruns.txt
Source: https://packetstormsecurity.com/files/33848/sambaOverruns.txt.html