An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.
{
"unresolved_ranges": [
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "32"
}
],
"cpe": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "33"
}
],
"cpe": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
}
]
}{
"source": "CPE_FIELD",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "2.5.8"
},
{
"last_affected": "1.6.0"
},
{
"introduced": "2.6.0"
},
{
"last_affected": "2.6.6"
},
{
"introduced": "2.7.0"
},
{
"last_affected": "2.7.1"
}
],
"cpe": [
"cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*",
"cpe:2.3:a:ruby-lang:webrick:*:*:*:*:*:ruby:*:*"
]
}