Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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websocket-extensions npm module prior to 0.1.4 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.
- https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623
- https://github.com/PalindromeLabs/awesome-websocket-security
- https://github.com/engn33r/awesome-redos-security
- https://github.com/ossf-cve-benchmark/CVE-2020-7662