Vulnerability identifier: #VU51211

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21255

CWE-ID: CWE-862

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GLPI
Web applications / CRM systems

Vendor: glpi-project

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system. 

The vulnerability exists due to insecure direct object reference (IDOR) issue. A remote attacker can switch entities with IDOR from a logged in user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GLPI: 9.5.3

---

External links
http://github.com/glpi-project/glpi/commit/aade65b7f67d46f23d276a8acb0df70651c3b1dc
http://github.com/glpi-project/glpi/security/advisories/GHSA-v3m5-r3mx-ff9j

---

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.