Open redirect in vBulletin

1) Open redirect

EUVDB-ID: #VU10311

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-6200

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform phishing attacks.

The vulnerability exists due to open redirect in redirector.php. A remote attacker can use a specially crafted 'url' parameter and redirect users to malicious websites.

Mitigation

Update to version 4.2.5.

Vulnerable software versions

vBulletin: 2.3.8 - 4.2.4

CPE2.3

• cpe:2.3:a:vbulletin:vbulletin:2.3.8:*:*:*:*:*:*:*
• cpe:2.3:a:vbulletin:vbulletin:3.0:beta 2:*:*:*:*:*:*
• cpe:2.3:a:vbulletin:vbulletin:3.0:beta 3:*:*:*:*:*:*

External links

https://cxsecurity.com/issue/WLB-2018010251

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.