#VU60812 Permissions, Privileges, and Access Controls in Zabbix - CVE-2022-23132

Vulnerability identifier: #VU60812

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-23132

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Zabbix
Server applications / Remote management servers, RDP, SSH

Vendor: Zabbix

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to during Zabbix installation from RPM, DAC_OVERRIDE SELinux capability is in use to access PID files in [/var/run/zabbix] folder. In this case, Zabbix Proxy or Server processes can bypass file read, write and execute permissions check on the file system level.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zabbix: 4.0.0 rc1 - 4.0.36, 5.0.0 rc1 - 5.0.18, 5.4.0 rc1 - 5.4.8

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External links
https://support.zabbix.com/browse/ZBX-20341
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SZYHXINBKCY42ITFSNCYE7KCSF33VRA/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VB6W556GVXOKUYTASTDGL3AI7S3SJHX7/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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