=========================================================================Ubuntu Security Notice USN-1346-1
January 24, 2012

curl vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10

Summary:

curl could be tricked into injecting arbitrary data if it handled a
malicious URL.

Software Description:
- curl: HTTP, HTTPS, and FTP client and client libraries

Details:

Dan Fandrich discovered that curl incorrectly handled URLs containing
embedded or percent-encoded control characters. If a user or automated
system were tricked into processing a specially crafted URL, arbitrary
data could be injected.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
  libcurl3                        7.21.6-3ubuntu3.2
  libcurl3-gnutls                 7.21.6-3ubuntu3.2
  libcurl3-nss                    7.21.6-3ubuntu3.2

Ubuntu 11.04:
  libcurl3                        7.21.3-1ubuntu1.5
  libcurl3-gnutls                 7.21.3-1ubuntu1.5
  libcurl3-nss                    7.21.3-1ubuntu1.5

Ubuntu 10.10:
  libcurl3                        7.21.0-1ubuntu1.3
  libcurl3-gnutls                 7.21.0-1ubuntu1.3

In general, a standard system update will make all the necessary changes.

References:
  
  CVE-2012-0036

Package Information:
  https://launchpad.net/ubuntu/+source/curl/7.21.6-3ubuntu3.2
  https://launchpad.net/ubuntu/+source/curl/7.21.3-1ubuntu1.5
  https://launchpad.net/ubuntu/+source/curl/7.21.0-1ubuntu1.3