CVE-2020-8289

View on CVE.org

Published Dec 27, 2020 CVSS 3.1 · 7.8 High EPSS 4.7% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

Backblaze

affected

Version	Status	Constraints
`Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:backblaze:backblaze::::::windows::*
	cpe:2.3:a:backblaze:backblaze::::::macos::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: 4.7% (4.696% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
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

History

No history.

Subscriptions

Backblaze Backblaze

Weaknesses

CWE-295

Sources

CVE record Updated: Aug 4, 2024, 9:56 AM

Status: PUBLISHED
Assigner: hackerone
Published: Dec 27, 2020, 1:20 AM
Updated: Aug 4, 2024, 9:56 AM
Reserved: Jan 28, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:26 AM

Status: Modified
Published: Dec 27, 2020, 2:15 AM
Modified: Jun 17, 2026, 3:26 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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