CVEs-PoC/2020/CVE-2020-7760.md

### [CVE-2020-7760](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7760)
![](https://img.shields.io/static/v1?label=Product&message=codemirror&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=org.apache.marmotta.webjars%3Acodemirror&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%205.58.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Regular%20Expression%20Denial%20of%20Service%20(ReDoS)&color=brighgreen)

### Description

This affects the package codemirror before 5.58.2; the package org.apache.marmotta.webjars:codemirror before 5.58.2. The vulnerable regular expression is located in https://github.com/codemirror/CodeMirror/blob/cdb228ac736369c685865b122b736cd0d397836c/mode/javascript/javascript.jsL129. The ReDOS vulnerability of the regex is mainly due to the sub-pattern (s|/*.*?*/)*

### POC

#### Reference
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEMARMOTTAWEBJARS-1024450
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1024449
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1024445
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCODEMIRROR-1024448
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCOMPONENTS-1024446
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1024447
- https://snyk.io/vuln/SNYK-JS-CODEMIRROR-1016937
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html

#### Github
- https://github.com/deepakdba/cve_checklist
- https://github.com/engn33r/awesome-redos-security
- https://github.com/radtek/cve_checklist
- https://github.com/yetingli/PoCs