CVE-2021-38547 Information disclosure in n/a
Remote attackers can recover audio signals from Logitech speakers by analyzing power indicator LED fluctuations using optical sensors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-38547?
CVE-2021-38547 is a medium-severity vulnerability in n/a, published on 11 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Logitech Z120 and S120 speakers 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.
Which versions are affected by CVE-2021-38547?
It affects 2 products.
Products include Logitech S120 Firmware, Logitech Z120 Firmware.
How do I fix CVE-2021-38547?
No fix has been published for CVE-2021-38547 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-38547 being exploited?
There is no known exploitation of CVE-2021-38547 in the wild and no public exploit code.
Sources
Also known as GHSA-7492-ggfx-8x9r.