rails - several vulnerabilities

Several vulnerabilities have been discovered in Rails, the Ruby web
application framework. The Common Vulnerabilities and Exposures project
identifies the following problems:

• CVE-2011-0446
  Multiple cross-site scripting (XSS) vulnerabilities when JavaScript
  encoding is used, allow remote attackers to inject arbitrary web
  script or HTML.
• CVE-2011-0447
  Rails does not properly validate HTTP requests that contain an
  X-Requested-With header, which makes it easier for remote attackers
  to conduct cross-site request forgery (CSRF) attacks.

For the oldstable distribution (lenny), this problem has been fixed in
version 2.1.0-7+lenny0.1.

For the stable distribution (squeeze), this problem has been fixed in
version 2.3.5-1.2+squeeze0.1.

For the unstable distribution (sid), this problem has been fixed in
version 2.3.11-0.1.

We recommend that you upgrade your rails packages.