CVE-2020-8290

View on CVE.org

Published Dec 27, 2020 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Description

Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.

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
`Prior to 7.0.0.439`	affected	—

Configuration 1 [-]

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

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

Source	ID	Title
EUVD	EUVD-2020-29158	Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.589% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/geffner/CVE-2020-8290/blob/master/README.md
https://hackerone.com/reports/818857
https://youtu.be/OpC6neWd2aM

History

No history.

Subscriptions

Backblaze Backblaze

Weaknesses

CWE-269

Sources

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

Status: PUBLISHED
Assigner: hackerone
Published: Dec 27, 2020, 1:22 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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