Vulnerability identifier: #VU27570

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11036

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 user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the comments of items in the Knowledge base. A remote administrator can permanently inject 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 - 9.4.5, 0.20 - 0.90.5

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External links
http://github.com/glpi-project/glpi/security/advisories/GHSA-3g3h-rwhr-7385

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.