CVSS 7.5 · High EPSS 0,60%
Kerentanan Out-of-bounds Read pada bacnetstack bacnet stack. Skor CVSS 3.1 7.5 (High) menurut NVD.
BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to 1.4.3, an off-by-one out-of-bounds read vulnerability in bacnet-stack's ReadPropertyMultiple service decoder allows unauthenticated remote attackers to read one byte past an allocated buffer boundary by sending a crafted RPM request with a truncated object identifier. The vulnerability is in rpm_decode_object_id(), which checks apdu_len < 5 but then accesses all 6 byte positions (indices 0-5) — consuming 1 byte for the context tag, 4 bytes for the object ID, then reading apdu[5] for the opening tag check. A 5-byte input passes the length check but causes a 1-byte OOB read, leading to crashes on embedded BACnet devices. The vulnerability exists in src/bacnet/rpm.c and affects any deployment that enables the ReadPropertyMultiple confirmed service handler (enabled by default in the reference server). This vulnerability is fixed in 1.4.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| bacnetstack | bacnet stack | Versi 1.4.0 hingga sebelum 1.4.3 |
| bacnetstack | bacnet stack | Versi 1.5.0 rc1 |
| bacnetstack | bacnet stack | Versi 1.5.0 rc2 |
| bacnetstack | bacnet stack | Versi 1.5.0 rc3 |