CVE-2020-7662

published 2020-06-02

CVE-2020-7662: 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…

Priority P3 37 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

2 ranges

Vendor	Product	Version range	Fixed in
websocket-extensions_project	websocket-extensions	< 0.1.4	0.1.4
websocket-extensions_project	websocket-extensions	>= 0 < 0.1.4	0.1.4

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P

vendor_redhat 7.5 HIGH

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CWE-400 CWE-20