Vulnerability identifier: #VU43336

Vulnerability risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2012-5911

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
b2evolution
Web applications / CMS

Vendor: b2evolution.net

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in blogs/blog1.php in b2evolution 4.1.3 when processing message body. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

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

Vulnerable software versions

b2evolution: 4.1.3

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External links
http://b2evolution.net/news/2012/04/06/b2evolution-4-1-4-stable
http://osvdb.org/80672
http://packetstormsecurity.org/files/111294/B2Evolution-CMS-4.1.3-SQL-Injection.html
http://vulnerability-lab.com/get_content.php?id=482
http://www.securityfocus.com/bid/52783
http://exchange.xforce.ibmcloud.com/vulnerabilities/74458

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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.