CVE-2021-27954 Memory corruption in n/a
A heap-based buffer overflow in the ecobee3 lite HomeKit setup allows attackers to force SSID connections or cause denial of service.
- 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-2021-27954?
CVE-2021-27954 is a high-severity memory corruption vulnerability in n/a, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A heap-based buffer overflow vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HKProcessConfig function of the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to force the device to connect to a SSID or cause a denial of service.
Weakness: CWE-787
Which versions are affected by CVE-2021-27954?
It affects 1 product.
Products include Ecobee Ecobee3 Lite Firmware.
How do I fix CVE-2021-27954?
No fix has been published for CVE-2021-27954 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-27954 being exploited?
There is no known exploitation of CVE-2021-27954 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gm95-7c28-qmq3.