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.
Metrics
Affected Vendors & Products
References
History
No history.

Status: PUBLISHED
Assigner: snyk
Published:
Updated: 2024-08-04T09:33:20.006Z
Reserved: 2020-01-21T00:00:00
Link: CVE-2020-7662

No data.

Status : Modified
Published: 2020-06-02T19:15:12.403
Modified: 2024-11-21T05:37:33.803
Link: CVE-2020-7662
