Vulnerability identifier: #VU19055

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GLPI
Web applications / CRM systems

Vendor: glpi-project

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.