Advisory Details

February 8th, 2024

Wazuh Log Collector Integer Underflow Local Privilege Escalation Vulnerability

CVE ID	CVE-2023-42463
CVSS SCORE	7.4, AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Wazuh
AFFECTED PRODUCTS	Wazuh
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Wazuh. Log Injection is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of the multilines log format. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
ADDITIONAL DETAILS	Wazuh has issued an update to correct this vulnerability. More details can be found at: https://documentation.wazuh.com/current/release-notes/release-4-5-3.html
DISCLOSURE TIMELINE	2023-09-14 - Vulnerability reported to vendor 2024-02-08 - Coordinated public release of advisory 2024-07-01 - Advisory Updated
CREDIT	Keith Yeo (@kyeojy)

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