https://github.com/mbadanoiu/cve-2022-40634

CVE-2022-40634: FreeMarker Server-Side Template Injection in CrafterCMS
https://github.com/mbadanoiu/cve-2022-40634

0-day authenticated bypass cve cve-2020-25803 cve-2022-40634 cves remote-code-execution server-side-template-injection

Last synced: 2 days ago
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CVE-2022-40634: FreeMarker Server-Side Template Injection in CrafterCMS

• Host: GitHub
• URL: https://github.com/mbadanoiu/cve-2022-40634
• Owner: mbadanoiu
• Created: 2023-12-01T10:06:17.000Z (12 months ago)
• Default Branch: main
• Last Pushed: 2023-12-01T10:22:46.000Z (12 months ago)
• Last Synced: 2023-12-01T13:35:28.562Z (12 months ago)
• Topics: 0-day, authenticated, bypass, cve, cve-2020-25803, cve-2022-40634, cves, remote-code-execution, server-side-template-injection
• Homepage:
• Size: 1.78 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# CVE-2022-40634: FreeMarker Server-Side Template Injection in CrafterCMS

By inserting malicious content in a FTL template, an attacker may perform SSTI (Server-Side Template Injection) attacks, which can leverage FreeMarker exposed objects to bypass restrictions and obtain RCE (Remote Code Execution).

### Vendor Disclosure:

The vendor's disclosure and fix for this vulnerability can be found [here](https://docs.craftercms.org/en/3.1/security/advisory.html#cv-2022091301).

### Requirements:

This vulnerability requires:




- Valid user credentials

### Proof Of Concept:

More details and the exploitation process can be found in this [PDF](https://github.com/mbadanoiu/CVE-2022-40634/blob/main/CrafterCMS%20-%20CVE-2022-40634.pdf).

### Additional Resources:

Initial [vulnerability (CVE-2020-25803)](https://docs.craftercms.org/en/3.1/security/advisory.html#cv-2020080102) and [blogpost](https://securitylab.github.com/advisories/GHSL-2020-042-crafter_cms/) by [Alvaro "pwntester" Munoz](https://github.com/pwntester) that inspired the SSTI research and finding of this vulnerability.