#VU43650 Cross-site request forgery in MyBB - CVE-2011-5131

Vulnerability identifier: #VU43650

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-5131

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MyBB
Other software / Other software solutions

Vendor: MyBB Group

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

MyBB: 1.1.0 - 1.6.3

---

External links
https://blog.mybb.com/2011/11/25/mybb-1-6-5-released-feature-update-security-maintenance-release/
https://dev.mybb.com/issues/1729
https://secunia.com/advisories/46951
https://www.osvdb.org/77327
https://www.securityfocus.com/bid/50816
https://exchange.xforce.ibmcloud.com/vulnerabilities/71462

---

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.