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.
References
Link | Resource |
---|---|
https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions | Exploit Third Party Advisory |
https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237 | Patch Third Party Advisory |
https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv | Exploit Third Party Advisory |
https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623 | Exploit Technical Description Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: snyk
Published: 2020-06-02T18:28:46
Updated: 2020-12-18T21:10:46
Reserved: 2020-01-21T00:00:00
Link: CVE-2020-7662
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-06-02T19:15:12.403
Modified: 2020-12-23T18:22:38.827
Link: CVE-2020-7662
JSON object: View
Redhat Information
No data.
CWE