CVE-2021-27954

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.

CVSS v3 8.2 HIGH
CVSS v2.0 6.4 MEDIUM

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:P

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.l9group.com/advisories/ecobee3-lite-heap-overflow	Exploit Third Party Advisory
https://www.l9group.com/advisories/ecobee3-lite-heap-overflow	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:ecobee:ecobee3_lite_firmware:4.5.81.200:*:*:*:*:*:*:*

cpe:2.3:h:ecobee:ecobee3_lite:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-08-03 15:15

Updated : 2024-11-21 05:58

NVD link : CVE-2021-27954

Mitre link : CVE-2021-27954

CVE.ORG link : CVE-2021-27954

JSON object : View

Products Affected

ecobee

ecobee3_lite
ecobee3_lite_firmware

CWE

CWE-787

Out-of-bounds Write

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