CVE-2021-38544 Information disclosure in n/a
Remote attackers can recover audio signals from Sony speakers by analyzing power indicator LED intensity variations 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-2021-38544?
CVE-2021-38544 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
Sony SRS-XB33 and SRS-XB43 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.
Which versions are affected by CVE-2021-38544?
It affects 2 products.
Products include Sony Srs-Xb33 Firmware, Sony Srs-Xb43 Firmware.
How do I fix CVE-2021-38544?
No fix has been published for CVE-2021-38544 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-38544 being exploited?
There is no known exploitation of CVE-2021-38544 in the wild and no public exploit code.
Sources
Also known as GHSA-4x9j-662f-4xw7.