SB2019092426 - Remote code execution in vBulletin

Description

This security bulletin contains information about 1 security vulnerability.

1) OS Command Injection (CVE-ID: CVE-2019-16759)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in "ajax/render/widget_php" when processing data passed via the "widgetConfig[code]" HTTP POST parameter. A remote unauthenticated attacker can send specially crafted HTTP POST request to the affected application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: The vulnerability is being actively exploited in the wild.

Remediation

Install update from vendor's website.

References

• https://seclists.org/fulldisclosure/2019/Sep/31
• https://www.exploit-db.com/exploits/47447
• https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4422707-vbullet...