Authorization bypass in Zabbix

1) Incorrect authorization

EUVDB-ID: #VU70507

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-43515

CWE-ID: CWE-863 - Incorrect Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization process.

The vulnerability exists due to Zabbix Frontend relies on the X-Forwarded-For header during software maintenance. A remote attacker can use the X-Forwarded-For header to bypass implemented protection and gain access to the application frontend.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zabbix: 4.0.0 - 6.2.4 rc1

CPE2.3

• cpe:2.3:a:zabbix:zabbix:6.2.4:rc1:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.10:rc2:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:5.0.29:rc2:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:5.4.12:rc1:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:5.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:4.0.44:rc1:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:4.2.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:4.4.10:rc1:*:*:*:*:*:*

External links

http://support.zabbix.com/browse/ZBX-22050

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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