The tailMatch function in cookie.c in cURL and libcurl before 7.30.0 does not properly match the path domain when sending cookies, which allows remote attackers to steal cookies via a matching suffix in the domain of a URL. Per http://www.ubuntu.com/usn/USN-1801-1/
"A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 12.10
Ubuntu 12.04 LTS
Ubuntu 11.10
Ubuntu 10.04 LTS
Ubuntu 8.04 LTS"
Publication date: Tue, 30 Apr 2013 03:55:00 +0000