Medium severity · published Sep 11, 2020
CVE-2020-15802
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth
5.9
CVSS
7.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.1% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bluetooth Core Specification · Bluetooth
before 5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15802
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15802
Third Party Advisory
https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709
Vendor Advisory
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/
Third Party Advisory
https://www.kb.cert.org/vuls/id/589825
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