CVE-2021-3588 memory contents disclosure in cli_feat_read_cb

Low 3.3 Published 10 Jun 2021 Updated 16 Sep 2024

An attacker can read sensitive memory contents due to missing bounds checks in the BlueZ Bluetooth stack's GATT database handler.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2021-3588?

CVE-2021-3588 is a low-severity vulnerability in BlueZ, published on 10 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-788, CWE-125

Which versions are affected by CVE-2021-3588?

It affects 1 product.

Linux distribution packages (4)

`bluez` SUSE:Linux Enterprise Module for Basesystem 15 SP3	All versions	`5.55-3.6.1`
`bluez` SUSE:Linux Enterprise Module for Desktop Applications 15 SP3	All versions	`5.55-3.6.1`
`bluez` SUSE:Linux Enterprise Workstation Extension 15 SP3	All versions	`5.55-3.6.1`
`bluez` openSUSE:Leap 15.3	All versions	`5.55-3.6.1`

Products include Bluez Bluez.

How do I fix CVE-2021-3588?

Apply the vendor's patch.

Is CVE-2021-3588 being exploited?

There is no known exploitation of CVE-2021-3588 in the wild and no public exploit code.

Sources

Also known as AZL-7183, DEBIAN-CVE-2021-3588, GHSA-3h8m-q4x3-3fhw, OESA-2021-1254, SUSE-SU-2021:2459-1, UBUNTU-CVE-2021-3588 and 1 more.