CVE Vulnerabilities

CVE-2020-8290

Improper Privilege Management

Published: Dec 27, 2020 | Modified: Dec 31, 2020
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in bztransmit helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.

Weakness

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Software

Name Vendor Start Version End Version
Backblaze Backblaze * 7.0.0.439 (excluding)

Potential Mitigations

References