CVE Vulnerability

CVE-2020-8290

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.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/geffner/CVE-2020-8290/blob/master/README.md Exploit Third Party Advisory
https://youtu.be/OpC6neWd2aM Exploit Third Party Advisory
https://hackerone.com/reports/818857 Permissions Required
Configurations

Configuration 1

cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:windows:*:*
cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:macos:*:*
Information

Published : 2020-12-27 02:15

Updated : 2020-12-31 07:25

NVD link : CVE-2020-8290

Mitre link : CVE-2020-8290

Products Affected
No products.
CWE
CWE-269