CVE-2020-7663

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Source
https://cve.org/CVERecord?id=CVE-2020-7663
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-7663.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-7663
Aliases
Downstream
Related
Published
2020-06-02T19:15:12.467Z
Modified
2026-05-16T04:03:01.665879587Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

websocket-extensions ruby module prior to 0.1.5 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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_FIELD",
            "cpes": [
                "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
                {
                    "last_affected": "16.04"
                },
                {
                    "last_affected": "18.04"
                },
                {
                    "last_affected": "20.04"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
                {
                    "last_affected": "9.0"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpes": [
                "cpe:2.3:a:websocket-extensions_project:websocket-extensions:*:*:*:*:*:ruby:*:*"
            ],
            "vendor_product": "websocket-extensions_project:websocket-extensions",
            "extracted_events": [
                {
                    "fixed": "0.1.5"
                }
            ]
        }
    ]
}
References

Affected packages