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Zephyr Bluetooth unchecked packet data results in denial of service

Moderate
d3zd3z published GHSA-f6vh-7v4x-8fjp Apr 26, 2021

Package

zephyr (west)

Affected versions

v1.14.2, v2.2.0

Patched versions

v1.14-branch, v2.3.0

Description

Impact

An unchecked parameter in bluetooth data can result in an assertion failure, or division by zero, resulting in a denial of service attack.

Patches

This has been fixed in:

For more information

If you have any questions or comments about this advisory:

embargo: 2020-05-25
zepsec: ZEPSEC-81

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVE ID

CVE-2020-10069

Weaknesses

Improper Handling of Parameters

The product does not properly handle when the expected number of parameters, fields, or arguments is not provided in input, or if those parameters are undefined. Learn more on MITRE.