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CVE-2024-1638

Bluetooth characteristic LESC security requirement not enforced without additional flags

CVSS 8.2 HIGHEPSS 0.4%CWE-20
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 8.2EPSS 0.4%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
19 feb 2024Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
The documentation specifies that the BT_GATT_PERM_READ_LESC and BT_GATT_PERM_WRITE_LESC defines for a Bluetooth characteristic: Attribute read/write permission with LE Secure Connection encryption. If set, requires that LE Secure Connections is used for read/write access, however this is only true when it is combined with other permissions, namely BT_GATT_PERM_READ_ENCRYPT/BT_GATT_PERM_READ_AUTHEN (for read) or BT_GATT_PERM_WRITE_ENCRYPT/BT_GATT_PERM_WRITE_AUTHEN (for write), if these additional permissions are not set (even in secure connections only mode) then the stack does not perform any permission checks on these characteristics and they can be freely written/read.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Productos afectados
zephyrproject-rtos · Zephyr

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