An issue was discovered in the WEBrick toolkit through 1.8.1 for Ruby. It allows HTTP request smuggling by providing both a Content-Length header and a Transfer-Encoding header, e.g., "GET /admin HTTP/1.1\r\n" inside of a "POST /user HTTP/1.1\r\n" request. NOTE: the supplier's position is "Webrick should not be used in production."
{
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libruby2.3",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm11"
},
{
"binary_name": "ruby2.3",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm11"
},
{
"binary_name": "ruby2.3-tcltk",
"binary_version": "2.3.1-2~ubuntu16.04.16+esm11"
}
]
}