CVE-2020-26556
Bluetooth Mesh AuthValue Brute-Force Malleable Commitment
Description
Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.
INFO
Published Date :
May 24, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 5:20 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.6
Public PoC/Exploit Available at Github
CVE-2020-26556 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-2020-26556
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.
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-2020-26556.
| URL | Resource |
|---|---|
| https://kb.cert.org/vuls/id/799380 | Third Party Advisory US Government Resource |
| https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ | Vendor Advisory |
| https://www.kb.cert.org/vuls/id/799380 | Third Party Advisory US Government Resource |
| https://kb.cert.org/vuls/id/799380 | Third Party Advisory US Government Resource |
| https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ | Vendor Advisory |
| https://www.kb.cert.org/vuls/id/799380 | Third Party Advisory US Government Resource |
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).
BlueToolkit is an extensible Bluetooth Classic vulnerability testing framework that helps uncover new and old vulnerabilities in Bluetooth-enabled devices. Could be used in the vulnerability research, penetration testing and bluetooth hacking. We also collected and classified Bluetooth vulnerabilities in an "Awesome Bluetooth Security" way
bluetooth bluetooth-classic bluetooth-security exploit security security-tools bluetooth-toolkit awesome awesome-list bluetooth-hacking information-security penetration-testing pentesting wireless-security
Shell Ruby
None
List of Bluetooth BR/EDR/LE security resources
bluetooth bluetooth-low-energy bluetooth-security pentesting penetration-testing security awesome awesome-list ble bluetooth-hacking
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-26556 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-26556 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://kb.cert.org/vuls/id/799380 Added Reference https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ Added Reference https://www.kb.cert.org/vuls/id/799380 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 29, 2022
Action Type Old Value New Value Changed Reference Type https://www.kb.cert.org/vuls/id/799380 No Types Assigned https://www.kb.cert.org/vuls/id/799380 Third Party Advisory, US Government Resource Changed CPE Configuration OR *cpe:2.3:a:bluetooth:mesh_profile:1.0.0:*:*:*:*:*:*:* *cpe:2.3:a:bluetooth:mesh_profile:1.0.1:*:*:*:*:*:*:* OR *cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:* versions from (including) 1.0b up to (including) 5.2 *cpe:2.3:a:bluetooth:mesh_profile:1.0.0:*:*:*:*:*:*:* *cpe:2.3:a:bluetooth:mesh_profile:1.0.1:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 29, 2021
Action Type Old Value New Value Added Reference https://www.kb.cert.org/vuls/id/799380 [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 03, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://kb.cert.org/vuls/id/799380 No Types Assigned https://kb.cert.org/vuls/id/799380 Third Party Advisory, US Government Resource Changed Reference Type https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ No Types Assigned https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ Vendor Advisory Added CWE NIST CWE-307 Added CPE Configuration OR *cpe:2.3:a:bluetooth:mesh_profile:1.0.0:*:*:*:*:*:*:* *cpe:2.3:a:bluetooth:mesh_profile:1.0.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-26556 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-2020-26556
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} -0.00%
score
0.23124
percentile