Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Backblaze | Backblaze | < 7.0.1.433 |
Related Weaknesses (CWE)
References
- http://seclists.org/fulldisclosure/2020/Dec/57Mailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/58Mailing ListThird Party Advisory
- https://github.com/geffner/CVE-2020-8289/blob/master/README.mdExploitThird Party Advisory
- https://hackerone.com/reports/818853Permissions Required
- https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/Third Party Advisory
- https://youtu.be/W0THXbcX5V8ExploitThird Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/57Mailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/Dec/58Mailing ListThird Party Advisory
- https://github.com/geffner/CVE-2020-8289/blob/master/README.mdExploitThird Party Advisory
- https://hackerone.com/reports/818853Permissions Required
- https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/Third Party Advisory
- https://youtu.be/W0THXbcX5V8ExploitThird Party Advisory
FAQ
What is CVE-2020-8289?
CVE-2020-8289 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 v...
How severe is CVE-2020-8289?
CVE-2020-8289 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-8289?
Check the references section above for vendor advisories and patch information. Affected products include: Backblaze Backblaze.