OwnTone Server DAAP Handler Flaws

Concurrent DAAP login requests crash OwnTone Server 28.4-29.0 via race condition in session list handling, causing remote denial of service without authentication. Attack complexity is high (CVSS AC:H) but requires no privileges, enabling unauthenticated attackers to flood the /login endpoint and trigger crashes through unsynchronized global state access. Vendor patch available via GitHub commit dca94641; no active exploitation confirmed at time of analysis.

SQL injection in OwnTone Server 28.4 through 29.0 allows unauthenticated remote attackers to inject arbitrary SQL expressions via the query= and filter= parameters in DAAP requests, enabling bypass of access controls and unauthorized retrieval of media library data. The vulnerability stems from insufficient sanitization of integer-mapped DAAP field parameters and affects default network-accessible deployments without requiring user interaction.