Vulnerability CVE-2020-8289
Published: 2020-12-27

Description:
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.

Type:

CWE-295

 (Certificate Issues)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Backblaze -> Backblaze 

 References:
http://seclists.org/fulldisclosure/2020/Dec/57
http://seclists.org/fulldisclosure/2020/Dec/58
https://github.com/geffner/CVE-2020-8289/blob/master/README.md
https://hackerone.com/reports/818853
https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/
https://youtu.be/W0THXbcX5V8
Copyright 2024, cxsecurity.com

 

Back to Top