CVE-2020-8289
HIGH 7.8EPSS 4.7%
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.
- Affected
- Backblaze
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C - EPSS
- 4.66% chance of exploitation in the next 30 days, 92nd percentile
- Published
- 2020-12-27
- Updated
- 2024-08-04
Proof-of-concept exploits (2)
- geffner/CVE-2020-828911★ · 2020-12-24
- https://youtu.be/W0THXbcX5V8
Security advisories
- http://seclists.org/fulldisclosure/2020/Dec/57
- http://seclists.org/fulldisclosure/2020/Dec/58
- geffner/CVE-2020-8289/blob/master/README.md
- https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1