Published: 09/07/2020 Updated: 12/07/2022

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs prior to 0.3.20.

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sockjs project sockjs

CVE-2020-7693: SockJS 0.3.19 Denial of Service POC

CVE-2020-7693: Meteor <1102 SockJS 0319 Denial of Service POC Author: Andrew Snow SockJS v0319 calls resend instead of reswrite when receiving websocket upgrade requests This causes an Error [ERR_STREAM_WRITE_AFTER_END]: write after end which crashes the container running the app utilising the vulnerable SockJS Vulnerable versions affected: Meteor JS <1

CWE-755 https://github.com/sockjs/sockjs-node/commit/dd7e642cd69ee74385825816d30642c43e051d16 https://snyk.io/vuln/SNYK-JS-SOCKJS-575261 https://github.com/sockjs/sockjs-node/issues/252 https://github.com/andsnw/sockjs-dos-py https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-575448 https://github.com/sockjs/sockjs-node/pull/265 https://nvd.nist.gov https://github.com/andsnw/sockjs-dos-py

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CVE-2020-7693

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