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websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. This could be abused by an attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade ruby-websocket-extensions | Aug 21, 2020 | Jun 2, 2020 |
| Freebsd | — | Upgrade rubygem-websocket-extensions | Jun 4, 2020 | Jun 3, 2020 |
| Suse | — | Upgrade ruby2.5-rubygem-websocket-extensionsUpgrade ruby2.5-rubygem-websocket-extensions-doc | Aug 9, 2024 | Jun 2, 2020 |
| Ubuntu | — | Upgrade ruby-websocket-extensions | Sep 17, 2020 | Jun 2, 2020 |
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