Home/CVE/Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may
CVE

CVE-2020-10135

Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may

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.

MEDIUM · CVSS 5.4 EPSS 0.20195
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-290Authentication Bypass by Spoofing
CWE-757Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
▤

Affected Products & Versions

2
bluetooth core<= 5.2
opensuse leapall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.htmlpacketstormsecurity.com
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · cret@cert.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 May 2020 · 04:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
⚑

Vendor Advisories

27
rhsaRHSA-2024:9315Low
suse-csafSUSE-SU-2024:2561-1
suse-csafSUSE-SU-2024:2360-1
suse-csafSUSE-SU-2024:2365-1
suse-csafopenSUSE-SU-2024:10728-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlBroken LinkMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.htmlBroken LinkMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jun/5ExploitMailing ListThird Party Advisory
https://francozappa.github.io/about-bias/Third Party Advisory
https://kb.cert.org/vuls/id/647177/Third Party AdvisoryUS Government Resource
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/Vendor Advisory
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