UBUNTU-CVE-2020-26558

Advisory lineage Upstream: 1 Downstream: 8
Upstream
CVE-2020-26558
Published: 08 Jun 2021, 17:00
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
low
17/100
CVSS Score
4.2 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Jun 2021, 17:00
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
Last Modified
Vulnerability information updated

Description

Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.2CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Systems

  • ubuntu•bluez

    < 5.37-0ubuntu5.3+esm1 | < 5.48-0ubuntu3.5 | < 5.53-0ubuntu3.2

  • ubuntu•linux

    all | < 4.4.0-219.252 | < 4.15.0-151.157 | < 5.4.0-80.90

  • ubuntu•linux-aws

    < 4.4.0-1099.104 | < 4.4.0-1135.149 | < 4.15.0-1109.116 | < 5.4.0-1054.57

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    < 5.11.0-1016.17~20.04.1

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1054.57~18.04.1

  • ubuntu•linux-aws-5.8

    < 5.8.0-1042.44~20.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2051.53 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1109.116~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1121.134~14.04.1 | < 4.15.0-1121.134~16.04.1 | all | < 5.4.0-1055.57

  • ubuntu•linux-azure-4.15

    < 4.15.0-1121.134

  • ubuntu•linux-azure-5.11

    < 5.11.0-1013.14~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1055.57~18.04.1

  • ubuntu•linux-azure-5.8

    < 5.8.0-1040.43~20.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2033.37 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    < 5.4.0-1016.19 | all

  • ubuntu•linux-dell300x

    < 4.15.0-1027.32

  • ubuntu•linux-fips

    < 4.4.0-1069.75 | all | < 4.15.0-1066.75 | < 5.4.0-1031.36

  • ubuntu•linux-gcp

    < 4.15.0-1106.120~16.04.1 | all | < 5.4.0-1049.53

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1106.120

  • ubuntu•linux-gcp-5.11

    < 5.11.0-1017.19~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1049.53~18.04.1

  • ubuntu•linux-gcp-5.8

    < 5.8.0-1039.41

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2016.18 | all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1049.52

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    < 5.4.0-1049.52~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1021.22

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1021.22~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-151.157~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    < 5.11.0-34.36~20.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-80.90~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1100.109 | < 4.15.0-1097.99 | < 5.4.0-1044.46

  • ubuntu•linux-lts-xenial

    < 4.4.0-219.252~14.04.1

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1032.33

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 4.15.0-1078.86~16.04.1 | < 4.15.0-1078.86 | < 5.4.0-1052.56

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.11

    < 5.11.0-1016.17~20.04.1

Showing first 50 affected entries in server-rendered view.

References (13)