CVE-2020-7662

Summary

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.

Affected Software

VendorProductVersion RangeStatus
n/awebsocket-extensions (npm)All versions prior to 0.1.4affected

Weaknesses

  • Regular Expression Denial of Service (ReDoS)

ADP Enrichment

CVE Program Container

Additional References

References