CVE-2020-26558medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
https://kb.cert.org/vuls/id/799380
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html
Details
Source: MITRE
Published: 2021-05-24
Updated: 2021-08-07
Type: CWE-287
Risk Information
CVSS v2
Base Score: 4.3
Vector: AV:A/AC:M/Au:N/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 5.5
Severity: MEDIUM
CVSS v3
Base Score: 4.2
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Impact Score: 2.5
Exploitability Score: 1.6
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:* versions from 2.1 to 5.2 (inclusive)
Configuration 2
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 155106 | RHEL 8 : bluez (RHSA-2021:4432) | Nessus | Red Hat Local Security Checks | medium |
| 155034 | CentOS 8 : bluez (CESA-2021:4432) | Nessus | CentOS Local Security Checks | medium |
| 153129 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5017-1) | Nessus | Ubuntu Local Security Checks | high |
| 152774 | Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5050-1) | Nessus | Ubuntu Local Security Checks | medium |
| 152665 | Ubuntu 20.04 LTS / 21.04 : Linux kernel vulnerabilities (USN-5046-1) | Nessus | Ubuntu Local Security Checks | medium |
| 152271 | Debian DSA-4951-1 : bluez - security update | Nessus | Debian Local Security Checks | high |
| 152055 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2451-1) | Nessus | SuSE Local Security Checks | high |
| 151998 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2422-1) | Nessus | SuSE Local Security Checks | high |
| 151996 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2426-1) | Nessus | SuSE Local Security Checks | high |
| 151989 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2427-1) | Nessus | SuSE Local Security Checks | high |
| 151986 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2421-1) | Nessus | SuSE Local Security Checks | high |
| 151935 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2427-1) | Nessus | SuSE Local Security Checks | high |
| 151920 | Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5018-1) | Nessus | Ubuntu Local Security Checks | high |
| 151897 | Slackware 14.2 : Slackware 14.2 kernel (SSA:2021-202-01) | Nessus | Slackware Local Security Checks | high |
| 151878 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) | Nessus | SuSE Local Security Checks | high |
| 151793 | Amazon Linux 2 : kernel (ALAS-2021-1685) | Nessus | Amazon Linux Local Security Checks | medium |
| 151743 | openSUSE 15 Security Update : bluez (openSUSE-SU-2021:2291-1) | Nessus | SuSE Local Security Checks | medium |
| 151658 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2349-1) | Nessus | SuSE Local Security Checks | high |
| 151653 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2021:2324-1) | Nessus | SuSE Local Security Checks | high |
| 151652 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:2325-1) | Nessus | SuSE Local Security Checks | high |
| 151649 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2321-1) | Nessus | SuSE Local Security Checks | high |
| 151617 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2303-1) | Nessus | SuSE Local Security Checks | high |
| 151531 | SUSE SLED15 / SLES15 Security Update : bluez (SUSE-SU-2021:2291-1) | Nessus | SuSE Local Security Checks | medium |
| 151200 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2202-1) | Nessus | SuSE Local Security Checks | high |
| 151125 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:2184-1) | Nessus | SuSE Local Security Checks | high |
| 151044 | Debian DLA-2692-1 : bluez security update | Nessus | Debian Local Security Checks | medium |
| 150985 | Debian DLA-2689-1 : linux security update | Nessus | Debian Local Security Checks | high |
| 150984 | Debian DLA-2690-1 : linux-4.19 security update | Nessus | Debian Local Security Checks | high |
| 150846 | Ubuntu 16.04 LTS : BlueZ vulnerabilities (USN-4989-2) | Nessus | Ubuntu Local Security Checks | high |
| 150809 | Ubuntu 18.04 LTS / 20.04 LTS : BlueZ vulnerabilities (USN-4989-1) | Nessus | Ubuntu Local Security Checks | high |