Cross-site scripting in Phorum

1) Cross-site scripting

EUVDB-ID: #VU44485

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2011-4561

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: Yes

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in admin.php in Phorum 5.2.18 when processing PATH_INFO to admin/index.php. NOTE: some of these details are obtained from third party information. 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

Phorum: 5.2.18

CPE2.3

• cpe:2.3:a:phorum_org:phorum:5.2.18:*:*:*:*:*:*:*

External links

https://osvdb.org/76026
https://secunia.com/advisories/46282
https://www.rul3z.de/advisories/SSCHADV2011-023.txt
https://www.securityfocus.com/archive/1/519991/100/0/threaded
https://www.securityfocus.com/bid/49920

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. However, proof of concept for this vulnerability is available.