Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.205
EPSS Ranking 95.3%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 9.3
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
- 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