CVE-2024-4295 PoC — Email Subscribers by Icegram Express <= 5.7.20 - Unauthenticated SQL Injection via hash

Source

https://github.com/truonghuuphuc/CVE-2024-4295-Poc

Associated Vulnerability

Title:Email Subscribers by Icegram Express <= 5.7.20 - Unauthenticated SQL Injection via hash (CVE-2024-4295)
Description:The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the ‘hash’ parameter in all versions up to, and including, 5.7.20 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Description

CVE-2024-4295 Email Subscribers by Icegram Express <= 5.7.20 - Unauthenticated SQL Injection via hash

Readme

# CVE-2024-4295-Poc
CVE-2024-4295 Email Subscribers by Icegram Express &lt;= 5.7.20 - Unauthenticated SQL Injection via hash

Call Stack
```
ES_DB_Lists_Contacts->edit_subscriber_status (\email-subscribers\lite\includes\db\class-es-db-lists-contacts.php:616)
Email_Subscribers_Public->es_email_subscribe_init (\email-subscribers\lite\public\class-email-subscribers-public.php:178)
WP_Hook->apply_filters (\var\www\html\wp-includes\class-wp-hook.php:324)
WP_Hook->do_action (\var\www\html\wp-includes\class-wp-hook.php:348)
do_action (\var\www\html\wp-includes\plugin.php:517)
require_once (\var\www\html\wp-settings.php:695)
require_once (\var\www\html\wp-config.php:133)
require_once (\var\www\html\wp-load.php:50)
require (\var\www\html\wp-blog-header.php:13)
{main} (\var\www\html\index.php:17)
```
File: email-subscribers/lite/public/class-email-subscribers-public.php

![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/8bcba1a0-2e9e-475c-af31-6bb1b8cf32f5)

![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/8be9e753-a961-49c6-987b-3d611d89c7aa)

File: email-subscribers/lite/includes/db/class-es-db-lists-contacts.php

![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/8a22d75c-6669-421f-93c6-910c91d42164)

Poc:
1. Email Subscribe
![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/d19c7dec-ed65-45d9-99b2-eec242449974)

2. Check mail

![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/bb52b6b6-f8d5-4630-995b-347d677e69ed)

3. Found link format: <Host>/?es=optin&hash={{encode base64}}

Example link: 
```
http://192.168.110.184:8080/?es=optin&hash=eyJtZXNzYWdlX2lkIjowLCJjYW1wYWlnbl9pZCI6MCwiY29udGFjdF9pZCI6IjMiLCJlbWFpbCI6Imt1cDU4MjQzQGlsZWJpLmNvbSIsImd1aWQiOiJiYXNvd3otZnpjYWRqLXN6ZmxycS1qY2ViYWYtdXpxYm12IiwibGlzdF9pZHMiOlsiMiJdLCJhY3Rpb24iOiJzdWJzY3JpYmUifQ==
```

![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/999978d1-3a7a-43f2-bb6d-f76d50f40939)

Example hash: 
```
eyJtZXNzYWdlX2lkIjowLCJjYW1wYWlnbl9pZCI6MCwiY29udGFjdF9pZCI6IjMiLCJlbWFpbCI6Imt1cDU4MjQzQGlsZWJpLmNvbSIsImd1aWQiOiJiYXNvd3otZnpjYWRqLXN6ZmxycS1qY2ViYWYtdXpxYm12IiwibGlzdF9pZHMiOlsiMiJdLCJhY3Rpb24iOiJzdWJzY3JpYmUifQ==
```

Decode base64 value from parameter hash:
![image](https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/658a44be-4726-4a43-8c3c-704f81b72ca0)

https://github.com/truonghuuphuc/CVE-2024-4295-Poc/assets/20487674/c7eaae00-2da4-45c8-970c-e66b3683badc

File Snapshot


 [4.0K]  /data/pocs/26f4009f8db57a1dd802ccffd67eca8146016af6
├── [1.6K]  CVE-2024-4295
└── [2.5K]  README.md

0 directories, 2 files

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