6.5
MEDIUM
CVE-2021-31609
Silicon Labs iWRAP Bluetooth Classic Buffer Overflow Crash
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.

INFO

Published Date :

Sept. 7, 2021, 7:15 a.m.

Last Modified :

Nov. 21, 2024, 6:05 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-31609 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-31609 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Silabs iwrap
2 Silabs wt32i-a
: Total Affected Vendor : 1 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-31609.

URL Resource
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description Third Party Advisory
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a Product Vendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description Third Party Advisory
https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a Product Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
JeffroMF/awesome-bluetooth-security321

None

Updated: 2 months, 2 weeks ago
1 stars 0 fork 0 watcher
Born at : April 5, 2022, 9:49 p.m. This repo has been linked 68 different CVEs too.
Profile Photo
Matheus-Garbelini/braktooth_esp32_bluetooth_classic_attacks

A Series of Baseband & LMP Exploits against Bluetooth Classic Controllers

Updated: 2 weeks, 4 days ago
453 stars 83 fork 83 watcher
Born at : June 7, 2021, 6:52 p.m. This repo has been linked 25 different CVEs too.
Profile Photo
engn33r/awesome-bluetooth-security

List of Bluetooth BR/EDR/LE security resources

bluetooth bluetooth-low-energy bluetooth-security pentesting penetration-testing security awesome awesome-list ble bluetooth-hacking

Updated: 2 weeks, 6 days ago
520 stars 47 fork 47 watcher
Born at : June 21, 2020, 6:27 p.m. This repo has been linked 72 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-31609 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-31609 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
    Added Reference https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Sep. 20, 2021

    Action Type Old Value New Value
    Changed CPE Configuration AND OR *cpe:2.3:o:silabs:iwrap:*:*:*:*:*:*:*:* versions up to (including) 6.3.0 OR cpe:2.3:h:silabs:wt32i-a:-:*:*:*:*:*:*:* AND OR *cpe:2.3:a:silabs:iwrap:*:*:*:*:*:*:*:* versions up to (including) 6.3.0 OR cpe:2.3:h:silabs:wt32i-a:-:*:*:*:*:*:*:*
  • Initial Analysis by [email protected]

    Sep. 13, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://dl.packetstormsecurity.net/papers/general/braktooth.pdf No Types Assigned https://dl.packetstormsecurity.net/papers/general/braktooth.pdf Technical Description, Third Party Advisory
    Changed Reference Type https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a No Types Assigned https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a Product, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:o:silabs:iwrap:*:*:*:*:*:*:*:* versions up to (including) 6.3.0 OR cpe:2.3:h:silabs:wt32i-a:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-31609 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-31609 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.07 }} 0.01%

score

0.28750

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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: