Advisories ยป MGASA-2021-0281

Updated bluez packages fix security vulnerability

Publication date: 23 Jun 2021
Type: security
Affected Mageia releases : 7 , 8
CVE: CVE-2020-26558 , CVE-2021-3588


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 

The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds
checks on the 'offset' variable before using it as an index into an array for
reading (CVE-2021-3588).