Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
wazuh wazuh
>= 1.0.0, < 4.14.6affected>= 5.0.0-beta1, < 5.0.0-beta2affected
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-9wm4-fp6c-hqgq ↗
- https://github.com/wazuh/wazuh/pull/35773 ↗
- https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96 ↗
- https://github.com/wazuh/wazuh/releases/tag/v4.14.6 ↗
- https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2 ↗