ruby-websocket-extensions: websocket-extensions ruby module prior to 0.1.5 allows Denial of Service (DoS) via Regex Backtracking
CVE-2020-7663 is fixed in ruby-websocket-extensions on 1 platform, first by ruby-websocket-extensions 0.1.2-1+deb9u1build0.18.04.1, released June 2, 2020. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ruby-websocket-extensions · Ubuntu 18.04.6 LTS (bionic) | 0.1.2-1+deb9u1build0.18.04.1 | ruby-websocket-extensions 0.1.2-1+deb9u1build0.18.04.1 | Jun 2, 2020 |
| ruby-websocket-extensions · Ubuntu 20.04 LTS (focal) | 0.1.2-1+deb9u1build0.20.04.1 | ruby-websocket-extensions 0.1.2-1+deb9u1build0.20.04.1 | Jun 2, 2020 |
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