| Package | Affected versions | Patched versions |
|---|---|---|
| ruby | ≥ 2.4.0, ≤ 2.4.7≥ 2.5.0, ≤ 2.5.6≥ 2.6.0, ≤ 2.6.4≤ 2.3.0 |
Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.
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