FreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation via DRDYNVC DATA_FIRST

Summary

FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.

Remediation

1. Inventory every FreeRDP FreeRDP deployment, including staging.
2. Upgrade FreeRDP FreeRDP to 3.32.2.
3. Confirm the running version after the upgrade.

References

• Advisoryhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrp5-666j-g6gp
• Advisoryhttps://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-uncapped-memory-allocation-via-drdynvc-data-first