CVE-2026-25770
CriticalSummary
W Wazuh, od wersji 3.9.0 do 4.14.3, występuje podatność na eskalację uprawnień w protokole synchronizacji klastra. Usługa `wazuh-clusterd` pozwala uwierzytelnionym węzłom na zapisywanie dowolnych plików w systemie plików menedżera z uprawnieniami użytkownika `wazuh`, co może prowadzić do złośliwego wstrzyknięcia komend.
Risk Assessment
Atakujący z dostępem do klastra może uzyskać pełne uprawnienia roota i wykonać złośliwy kod, co narusza zasadę minimalnych uprawnień i omija zamierzony model bezpieczeństwa. To stwarza poważne zagrożenie dla integralności i poufności systemu.
Recommendation
Zaleca się aktualizację Wazuh do wersji 4.14.3 lub nowszej, aby usunąć tę podatność. Dodatkowo, należy zweryfikować i dostosować uprawnienia do plików konfiguracyjnych, aby zminimalizować ryzyko eskalacji uprawnień.
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Original NVD description (English source)
Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0 and prior to version 4.14.3, a privilege escalation vulnerability exists in the Wazuh Manager's cluster synchronization protocol. The `wazuh-clusterd` service allows authenticated nodes to write arbitrary files to the manager’s file system with the permissions of the `wazuh` system user. Due to insecure default permissions, the `wazuh` user has write access to the manager's main configuration file (`/var/ossec/etc/ossec.conf`). By leveraging the cluster protocol to overwrite `ossec.conf`, an attacker can inject a malicious `<localfile>` command block. The `wazuh-logcollector` service, which runs as root, parses this configuration and executes the injected command. This chain allows an attacker with cluster credentials to gain full Root Remote Code Execution, violating the principle of least privilege and bypassing the intended security model. Version 4.14.3 fixes the
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

