CVE-2020-7662: Input Validation
First published: Tue Jun 02 2020(Updated: )
Faye websocket-extensions npm module is vulnerable to a denial of service, caused by improper input validation by the Sec-WebSocket-Extensions header. By using a specially-crafted value in the Sec-WebSocket-Extensions header, a remote attacker could exploit this vulnerability to cause a denial of service condition.
Credit: report@snyk.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/servicemesh-grafana | <0:6.2.2-38.el8 | 0:6.2.2-38.el8 |
| redhat/servicemesh-grafana | <0:6.4.3-11.el8 | 0:6.4.3-11.el8 |
| Websocket-extensions Project Websocket-extensions | <0.1.4 | |
| redhat/npmjs-websocket-extensions | <0.1.4 | 0.1.4 |
| <=10.0 |
Remedy
https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://exchange.xforce.ibmcloud.com/vulnerabilities/183199
- https://www.ibm.com/support/pages/node/7057377 (Advisory)
- https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions
- https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237
- https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv
- https://snyk.io/vuln/SNYK-JS-WEBSOCKETEXTENSIONS-570623
- https://access.redhat.com/errata/RHSA-2020:2796
- https://access.redhat.com/security/cve/cve-2020-7662
- https://access.redhat.com/errata/RHSA-2020:2861
- https://access.redhat.com/errata/RHSA-2020:4298
- https://bugzilla.redhat.com/show_bug.cgi?id=1845982
- https://www.cve.org/CVERecord?id=CVE-2020-7662 https://nvd.nist.gov/vuln/detail/CVE-2020-7662 https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv
- https://access.redhat.com/security/cve/CVE-2020-7662
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2020-7662?
CVE-2020-7662 is a vulnerability in the websocket-extensions npm module that allows Denial of Service (DoS) via Regex Backtracking.
How can the websocket-extensions npm module be exploited?
The vulnerability in websocket-extensions npm module can be exploited by sending a header with an unclosed string parameter value containing a repeating two-byte sequence of a backslash and another character.
What is the severity of CVE-2020-7662?
CVE-2020-7662 has a severity rating of 7.5 (high).
How do I fix the websocket-extensions npm module vulnerability (CVE-2020-7662)?
To fix the vulnerability, update the websocket-extensions npm module to version 0.1.4 or later.
Where can I find more information about CVE-2020-7662?
You can find more information about CVE-2020-7662 in the following references: [Reference 1](https://github.com/faye/websocket-extensions-node/security/advisories/GHSA-g78m-2chm-r7qv), [Reference 2](https://github.com/faye/websocket-extensions-node/commit/29496f6838bfadfe5a2f85dff33ed0ba33873237), [Reference 3](https://access.redhat.com/errata/RHSA-2020:2796).
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/severity
- agent/author
- agent/references
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-7662
- agent/software-canonical-lookup
- collector/ibm-support
- source/IBM
- agent/weakness
- agent/softwarecombine
- agent/description
- agent/event
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/websocket-extensions project
- canonical/websocket-extensions project websocket-extensions
- vendor/ibm
- canonical/ibm security verify governance
- version/ibm security verify governance/10.0