CVE-2021-38546

EUVD-2021-24994 · Published Aug 11, 2021

CREATIVE Pebble devices through 2021-08-09 allow remote attackers to recover speech signals from an LED on the device, via a telescope and an electro-optical sensor, aka a "Glowworm" attack. The power indicator LED of the speakers is connected directly to the power line, as a result, the intensity of a device's power indicator LED is correlative to the power consumption. The sound played by the speakers affects their power consumption and as a result is also correlative to the light intensity of the LEDs. By analyzing measurements obtained from an electro-optical sensor directed at the power indicator LEDs of the speakers, we can recover the sound played by them.

Technologies

Creative Pebble V2Creative Pebble PlusCreative PebbleCreative Pebble V3Creative Pebble V2 FirmwareCreative Pebble Plus FirmwareCreative Pebble V3 FirmwareCreative Pebble Firmware

CVSS scores

v3.15.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
v2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

MITRE ATT&CK

Inferred

Where this vulnerability fits in an attack

ReconImpact

Initial Access

T1190Exploit Public-Facing Application

References

https://www.nassiben.com/glowworm-attack

Potentially impacted assets

See if this affects your attack surface