Executive Summary

Informations
Name CVE-2020-7662 First vendor Publication 2020-06-02
Vendor Cve Last vendor Modification 2020-12-23

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7662

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2

Sources (Detail)

Source Url
MISC https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions
https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f...
https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g7...
https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623

Alert History

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Date Informations
2021-05-04 14:03:12
  • Multiple Updates
2021-04-22 03:08:20
  • Multiple Updates
2020-12-23 21:23:28
  • Multiple Updates
2020-12-19 05:22:52
  • Multiple Updates
2020-06-05 00:23:01
  • Multiple Updates
2020-06-04 21:23:26
  • Multiple Updates
2020-06-03 00:22:43
  • First insertion