#VU33524 Cross-site scripting - CVE-2017-0378

Vulnerability identifier: #VU33524

Vulnerability risk: Low

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

CVE-ID: CVE-2017-0378

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists in "the login_form function in views/helpers.php in Phamm before 0.6.7, exploitable" due to insufficient sanitization of user-supplied data passed via the PATH_INFO to main.php. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in 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.

External links
https://www.openwall.com/lists/oss-security/2017/07/20/3
https://www.phamm.org/docs/CHANGELOG
https://www.securityfocus.com/bid/99927
https://bugs.debian.org/868988
https://github.com/lota/phamm/issues/21

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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.