BlueZ up to 5.52 Access Control privileges management

Summaryinfo

A vulnerability was found in BlueZ up to 5.52. It has been classified as critical. Impacted is an unknown function of the component Access Control. This manipulation causes privileges management. This vulnerability is tracked as CVE-2020-0556. The attack is only possible within the local network. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in BlueZ up to 5.52. It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Access Control. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper access control in subsystem for BlueZ before version 5.53 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access.

The weakness was disclosed 03/12/2020 (Website). It is possible to read the advisory at intel.com. This vulnerability is known as CVE-2020-0556 since 10/28/2019. Access to the local network is required for this attack. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 210724 (CBL Mariner 2.0 Security Update: bluez (CVE-2023-45866)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.53 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (210724). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• BlueZ

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21
• 5.22
• 5.23
• 5.24
• 5.25
• 5.26
• 5.27
• 5.28
• 5.29
• 5.30
• 5.31
• 5.32
• 5.33
• 5.34
• 5.35
• 5.36
• 5.37
• 5.38
• 5.39
• 5.40
• 5.41
• 5.42
• 5.43
• 5.44
• 5.45
• 5.46
• 5.47
• 5.48
• 5.49
• 5.50
• 5.51
• 5.52

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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