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.
CVE-2020-7662 - High Severity Vulnerability
Generic extension manager for WebSocket connections
Library home page: https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.3.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/websocket-extensions/package.json
Dependency Hierarchy: - documentation-5.5.0.tgz (Root Library) - tiny-lr-1.1.1.tgz - faye-websocket-0.10.0.tgz - websocket-driver-0.7.3.tgz - :x: **websocket-extensions-0.1.3.tgz** (Vulnerable Library)
Found in base branch: master
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.
Publish Date: 2020-06-02
URL: CVE-2020-7662
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/advisories/GHSA-g78m-2chm-r7qv
Release Date: 2020-06-02
Fix Resolution (websocket-extensions): 0.1.4
Direct dependency fix Resolution (documentation): 6.0.0
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