Vulnerability Monitor

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CVE-2021-31609

The Bluetooth Classic implementation in Silicon Labs iWRAP 6.3.0 and earlier does not properly handle the reception of an oversized LMP packet greater than 17 bytes, allowing attackers in radio range to trigger a crash in WT32i via a crafted LMP packet.

Published

2021-09-07T07:15:06.940

Last Modified

2024-11-21T06:05:59.590

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

6.5

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	silabs	iwrap	≤ 6.3.0	Yes
Hardware	silabs	wt32i-a	-	No

References

https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description, Third Party Advisory ([email protected])
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a Product, Vendor Advisory ([email protected])
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a Product, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)