YouPHPTube /objects/commentAddNew.json.php comments_id SQL injection vulnerability

Summary

An exploitable SQL injection vulnerability exists in the authenticated portion of YouPHPTube 7.6. Specially crafted web requests can cause SQL injections. An attacker can send a web request with parameters containing SQL injection attacks to trigger this vulnerability, potentially allowing exfiltration of the database, user credentials and,in certain configuration, access the underlying operating system.

Tested Versions

YouPHPTube 6.2
YouPHPTube 7.6
YouPHPTube 7.7 commit 64d35de96e43c5e5b3d582162c12b86eec7e986b (Oct 1st 2019)

Product URLs

<https://www.youphptube.com/&gt;

CVSSv3 Score

7.4 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

CWE

CWE-89: Improper Neutralization of Special Elements used in an SQL Command (‘SQL Injection’)

Details

A SQL injection vulnerability exists in YouPHPTube 7.6. A successful attack could allow an attacker to access information such as usernames and password hashes that are stored in the database.

The /objects/commentAddNew.json.php URL and parameter comments_id have been confirmed to suffer from a SQL injection and could be exploited by authenticated attackers:

Parameter “comments_id” in /objects/commentAddNew.json.php :

POST /YouPHPTube/objects/commentAddNew.json.php HTTP/1.1
Host: [HOSTNAME].com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: */*
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 73
DNT: 1
Connection: close
Referer: http://[HOSTNAME].com/YouPHPTube/video/5d93d1ee0c556/page/1?
Cookie: PHPSESSID=[SESSIONID]; rememberme=1; user=admin; pass=[COOKIE]; autoplay=true

comment=aaaaaa&video=1&comments_id=[SQL Injection]&id=0

Timeline

2019-09-20 - Vendor Disclosure
2019-10-16 - Vendor Patched
2019-10-17 - Public Release