The to_s method in actionpack/lib/action_dispatch/middleware/remote_ip.rb in Ruby on Rails 3.0.5 does not validate the X-Forwarded-For header in requests from IP addresses on a Class C network, which might allow remote attackers to inject arbitrary text into log files or bypass intended address parsing via a crafted header.
{
"severity": "MODERATE",
"nvd_published_at": "2011-08-29T18:55:01Z",
"github_reviewed_at": "2020-06-16T20:56:30Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-20"
]
}