#VU101062 Format string error in Zabbix - CVE-2024-42330

Vulnerability identifier: #VU101062

Vulnerability risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-42330

CWE-ID: CWE-134

Exploitation vector: Network

Exploit availability: No

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

Vendor: Zabbix

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a format string error within the HttpRequest object that allows to get the HTTP headers from the server's response after sending the request. The returned strings are created directly from the data returned by the server and are not correctly encoded for JavaScript. A remote user can create internal strings that can be used to access hidden properties of objects, which can lead to remote code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zabbix: 6.0.0 rc1 - 6.0.33, 6.2.0 rc1 - 6.2.9, 6.4.0 rc1 - 6.4.18, 7.0.0 rc1 - 7.0.3

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External links
https://support.zabbix.com/browse/ZBX-25626

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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.