Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server. The Common Vulnerabilities and Exposures project identifies the following problems: The smbclient utility contains a formatstring vulnerability where commands dealing with file names treat user input as format strings to asprintf. In the smbd daemon, if a user is trying to modify an access control list (ACL) and is denied permission, this deny may be overridden if the parameter "dos filemode" is set to "yes" in the smb.conf and the user already has write access to the file. The old stable distribution (etch) is not affected by these problems.