CVE-2020-8290

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/geffner/CVE-2020-8290/blob/master/README.md	Exploit Third Party Advisory
https://youtu.be/OpC6neWd2aM	Exploit Third Party Advisory
https://hackerone.com/reports/818857	Permissions Required

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Configurations

Configuration 1 (hide)

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

Information

Published : 2020-12-26 18:15

Updated : 2020-12-31 11:25

NVD link : CVE-2020-8290

Mitre link : CVE-2020-8290

JSON object : View

CWE

CWE-269

Improper Privilege Management

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Products Affected

backblaze

backblaze

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