Cross-site scripting in GLPI

1) Cross-site scripting

EUVDB-ID: #VU19055

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-13239

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

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data by the "showMyForm" and "getURLForPicture" functions in "inc/user.class.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

Install update from vendor's website.

Vulnerable software versions

GLPI: 9.1 - 9.4.2

External links

http://github.com/glpi-project/glpi/commit/c2aa7a7cd6af28be3809acc7e7842d2d2008c0fb
http://github.com/glpi-project/glpi/releases/tag/9.4.3
http://www.synacktiv.com/ressources/advisories/GLPI_9.4.0_stored_XSS.pdf

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.