CVE-2019-5119: TALOS-2019-0909 || Cisco Talos Intelligence Group

Summary

An exploitable SQL injection vulnerability exist in the authenticated part 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/

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 has been found 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/subscribeNotify.json.php URL and parameter user_id have been confirmed to suffer from a SQL injection and could be exploited by authenticated attackers:

Parameter “user_id” in /objects/subscribeNotify.json.php:

POST /YouPHPTube/objects/subscribeNotify.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: 67
DNT: 1
Connection: close
Referer: http://[HOSTNAME].com/YouPHPTube/channels
Cookie: PHPSESSID=[SESSIONID]; rememberme=1; user=admin; pass=[COOKIE]; autoplay=true

email=root%40localhost.com&user_id=[SQL Injection]

Timeline

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

Discovered by Yuri Kramarz of Security Advisory EMEAR.