CVE-2021-38548 Information disclosure in n/a
Remote attackers can recover audio signals from JBL Go 2 speakers by analyzing LED light intensity variations caused by power consumption changes.
- 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-2021-38548?
CVE-2021-38548 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
JBL Go 2 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-2021-38548?
It affects 1 product.
Products include Jbl Go 2 Firmware.
How do I fix CVE-2021-38548?
No fix has been published for CVE-2021-38548 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-38548 being exploited?
There is no known exploitation of CVE-2021-38548 in the wild and no public exploit code.
Sources
Also known as GHSA-gw6g-fvjm-97c4.