Backblaze · Backblaze For Macos · CVE-2020-8289
**Name of the Vulnerable Software and Affected Versions**
Backblaze for Windows versions prior to 7.0.1.433
Backblaze for macOS versions prior to 7.0.1.434
**Description**
The issue arises from improper certificate validation in the `bztransmit` helper, caused by a hardcoded whitelist of strings in URLs where validation is disabled. This could lead to possible remote code execution via client update functionality.
**Recommendations**
For Backblaze for Windows versions prior to 7.0.1.433, update to version 7.0.1.433 or later.
For Backblaze for macOS versions prior to 7.0.1.434, update to version 7.0.1.434 or later.
As a temporary workaround, consider disabling the `bztransmit` helper until a patch is available.