#VU85066 Out-of-bounds read in Zabbix Agent - CVE-2023-32726

Vulnerability identifier: #VU85066

Vulnerability risk: Low

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

CVE-ID: CVE-2023-32726

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zabbix Agent
Client/Desktop applications / Software for system administration

Vendor: Zabbix

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when handling DNS server responses. A remote attacker can send a specially crafted DNS response to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zabbix Agent: 5.0.0 - 6.4.8

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External links
https://support.zabbix.com/browse/ZBX-23855

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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.