AGL app-framework-binder (afb-daemon) through v19.90.0 allows any local process to execute privileged supervision commands (Exit, Do, Sclose, Config, Trace, Debug, Token, slist) without authentication via the abstract Unix socket @urn:AGL:afs:supervision:socket. The onsupervisioncall function in src/afb-supervision.c dispatches all 8 commands without any credential verification. The abstract socket has no DAC protection, as acknowledged in the official CAUTION comment in src/afs-supervision.h. This allows a low-privileged local process to kill the daemon (DoS via Exit command), execute arbitrary API calls (via Do command), close arbitrary user sessions (via Sclose command), or leak the entire global configuration (via Config command). The vulnerability was introduced in commit b8c9d5de384efcfa53ebdb3f0053d7b3723777e1 on 2017-06-29.

AGL agl-service-can-low-level contains a stack buffer overflow in the uds-c library. The senddiagnosticrequest function in uds.c allocates a 6-byte stack buffer (MAXDIAGNOSTICPAYLOADSIZE=6) but copies up to 7 bytes (MAXUDSREQUESTPAYLOADLENGTH=7) via memcpy at an offset of 1+pidlength (2-3 bytes), resulting in 1-4 bytes of controlled stack overflow. The payloadlength field (uint8t) has no bounds check against the destination buffer. On 32-bit ARM automotive ECUs without stack canaries, this can lead to return address overwrite and RCE.