CVE Vulnerability

CVE-2020-8289

Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434 suffer from improper certificate validation in `bztransmit` helper due to hardcoded whitelist of strings in URLs where validation is disabled leading to possible remote code execution via client update functionality.

9.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

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 NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/geffner/CVE-2020-8289/blob/master/README.md Exploit Third Party Advisory
https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/ Third Party Advisory
https://youtu.be/W0THXbcX5V8 Exploit Third Party Advisory
https://hackerone.com/reports/818853 Permissions Required
http://seclists.org/fulldisclosure/2020/Dec/58 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2020/Dec/57 Mailing List Third Party Advisory
Configurations

Configuration 1

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

Published : 2020-12-27 02:15

Updated : 2020-12-31 07:04

NVD link : CVE-2020-8289

Mitre link : CVE-2020-8289

Products Affected
No products.
CWE
CWE-295

Improper Certificate Validation