Vulnerability Details : CVE-2020-15802
Potential exploit
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-15802
- cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-15802
56.59%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-15802
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2020-15802
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15802
-
https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709
Bluetooth Unveils Security Issue, With No Security SolutionThird Party Advisory
-
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/
Security Notice | Bluetooth® Technology WebsiteVendor Advisory
-
https://www.kb.cert.org/vuls/id/589825
VU#589825 - Devices supporting Bluetooth BR/EDR and LE using CTKD are vulnerable to key overwriteThird Party Advisory;US Government Resource
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