{ "data_type": "CVE", "data_format": "MITRE", "data_version": "4.0", "CVE_data_meta": { "ID": "CVE-2020-7662", "ASSIGNER": "report@snyk.io", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "n/a", "product": { "product_data": [ { "product_name": "websocket-extensions (npm)", "version": { "version_data": [ { "version_value": "All versions prior to 0.1.4" } ] } } ] } } ] } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Regular Expression Denial of Service (ReDoS)" } ] } ] }, "references": { "reference_data": [ { "refsource": "MISC", "name": "https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions", "url": "https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions" }, { "refsource": "MISC", "name": "https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv", "url": "https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv" }, { "refsource": "MISC", "name": "https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237", "url": "https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237" }, { "refsource": "MISC", "name": "https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623", "url": "https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623" } ] }, "description": { "description_data": [ { "lang": "eng", "value": "websocket-extensions npm module prior to 1.0.4 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." } ] } }