phpbb2 - several vulnerabilities

Several remote vulnerabilities have been discovered in phpBB, a web
based bulletin board. The Common Vulnerabilities and Exposures project
identifies the following problems:

• CVE-2008-0471
  Private messaging allowed cross site request forgery, making
  it possible to delete all private messages of a user by sending
  them to a crafted web page.
• CVE-2006-6841 / CVE-2006-6508
  Cross site request forgery enabled an attacker to perform various
  actions on behalf of a logged in user. (Applies to sarge only.)
• CVE-2006-6840
  A negative start parameter could allow an attacker to create
  invalid output. (Applies to sarge only.)
• CVE-2006-6839
  Redirection targets were not fully checked, leaving room for
  unauthorised external redirections via a phpBB forum.
  (Applies to sarge only.)
• CVE-2006-4758
  An authenticated forum administrator may upload files of any
  type by using specially crafted filenames. (Applies to sarge only.)

For the old stable distribution (sarge), these problems have been
fixed in version 2.0.13+1-6sarge4.

For the stable distribution (etch), these problems have been fixed
in version 2.0.21-7.

For the unstable distribution (sid) these problems have been fixed
in version 2.0.22-3.

We recommend that you upgrade your phpbb2 package.