Log file spoofing in Zabbix

1) Improper output neutralization for logs

EUVDB-ID: #VU101064

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-42332

CWE-ID: CWE-117 - Improper Output Neutralization for Logs

Exploit availability: No

Description

The vulnerability allows a remote attacker to spoof contents of the log files.

The vulnerability exists due to an error when parsing SNMP trap logs. A remote attacker can send specially crafted input to the application and spoof the contents log files shown via the Zabbix UI.

Note, successful exploitation of the vulnerability requires that the SNMP authentication is turned off and/or the attacker has knowledge of the community/auth details.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zabbix: 6.0.0 - 7.0.2 rc2

CPE2.3

• cpe:2.3:a:zabbix:zabbix:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.1:rc2:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.1:rc3:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.1:rc4:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:zabbix:zabbix:6.0.2:rc1:*:*:*:*:*:*

External links

https://support.zabbix.com/browse/ZBX-25628

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.