Remote code execution in vBulletin

1) Improper input validation

EUVDB-ID: #VU9755

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists in the vBulletin software package due to insufficient validation of user-supplied data. A remote attacker can send specially crafted file and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to the latest version.

Vulnerable software versions

vBulletin: 5.0

External links

http://www.checkpoint.com/defense/advisories/public/2017/cpai-2017-1077.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.