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CVE-2021-31609 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf CVETechnical DescriptionThird Party Advisory
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a CVEProductVendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf [email protected]Technical DescriptionThird Party Advisory
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a [email protected]ProductVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions
silabs iwrap
<= 6.3.0

CPE

  • cpe:2.3:a:silabs:iwrap:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
silabs wt32i-a
All versions

CPE

  • cpe:2.3:h:silabs:wt32i-a:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-31609
NVD Published Date:
Sep 7, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-31609 Details - Not Deferred