Vulnerability Details : CVE-2020-10135
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.
Exploit prediction scoring system (EPSS) score for CVE-2020-10135
Probability of exploitation activity in the next 30 days: 0.12%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 45 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-10135
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.8
|
MEDIUM | AV:A/AC:L/Au:N/C:P/I:P/A:N |
6.5
|
4.9
|
NIST |
|
5.4
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
2.8
|
2.5
|
CERT/CC |
|
5.4
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
2.8
|
2.5
|
NIST |
CWE ids for CVE-2020-10135
-
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.Assigned by: nvd@nist.gov (Primary)
-
A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.Assigned by: cret@cert.org (Secondary)
References for CVE-2020-10135
-
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/
Security Notice | Bluetooth® Technology WebsiteVendor Advisory
-
https://francozappa.github.io/about-bias/
BIASThird Party Advisory
-
https://kb.cert.org/vuls/id/647177/
VU#647177 - Bluetooth devices supporting BR/EDR are vulnerable to impersonation attacksThird Party Advisory;US Government Resource
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
[security-announce] openSUSE-SU-2020:1153-1: important: Security updateBroken Link;Mailing List;Third Party Advisory
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http://seclists.org/fulldisclosure/2020/Jun/5
Full Disclosure: BIAS (Bluetooth Impersonation Attack) CVE 2020-10135 reproductionExploit;Mailing List;Third Party Advisory
-
http://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.html
Bluetooth Impersonation Attack (BIAS) Proof Of Concept ≈ Packet StormThird Party Advisory;VDB Entry
-
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
[security-announce] openSUSE-SU-2020:1236-1: important: Security updateBroken Link;Mailing List;Third Party Advisory
Products affected by CVE-2020-10135
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:bluetooth:bluetooth_core:*:*:*:*:br:*:*:*
- cpe:2.3:a:bluetooth:bluetooth_core:*:*:*:*:edr:*:*:*