用户提问: (select concat(chr(64)||chr(52)||chr(51)||chr(55)||chr(48)||...
Ai回答: It looks like you're trying to construct a SQL injection payload that concatenates characters and the `user` value from the `DUAL` table in Oracle.
What Your Query Does:
- `chr(64)` = `@`
- `chr(52)` = `4`
- `chr(51)` = `3`
- `chr(55)` = `7`
- `chr(48)` = `0`
- `chr(49)` = `1`
- `user` = Current Oracle database username
- Then reverses the pattern (`@10734`)
So, your query generates:
`@43701<USER>@10734`
Example Output:
If the `user` is `SCOTT`, the result would be:
`@43701SCOTT@10734`
Security Note:
⚠️ This appears to be a SQL injection attempt. If you're testing a system for vulnerabilities, ensure you have explicit permission before proceeding. Unauthorized testing can be illegal.
Would you like help with:
1. Legitimate SQL string manipulation?
2. Securing a database against such queries?
3. Understanding how Oracle’s `DUAL` works?
Let me know how to assist properly!
\[
\boxed{@43701\text{<USER>}@10734}
\]
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提问时间: 2025-07-10 00:45:56
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