CVE-2020-8289
CVSS V2 High 9.3
CVSS V3 High 7.8
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.
Overview
- CVE ID
- CVE-2020-8289
- Assigner
- support@hackerone.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-27T02:15:14
- Last Modified Date
- 2020-12-31T19:04:39
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:windows:*:* | 1 | OR | 7.0.1.433 | |
| cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:macos:*:* | 1 | OR | 7.0.1.434 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:C/I:C/A:C
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 9.3
- Severity
- HIGH
- Exploitability Score
- 8.6
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.8
- Base Severity
- HIGH
- Exploitability Score
- 1.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/geffner/CVE-2020-8289/blob/master/README.md | Exploit Third Party Advisory |
| https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/ | Third Party Advisory |
| https://youtu.be/W0THXbcX5V8 | Exploit Third Party Advisory |
| https://hackerone.com/reports/818853 | Permissions Required |
| http://seclists.org/fulldisclosure/2020/Dec/58 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2020/Dec/57 | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-8289 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8289 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:29:00 | Added to TrackCVE | |||
| 2022-12-05 18:52:16 | cve-assignments@hackerone.com | support@hackerone.com | CVE Assigner | updated |
| 2022-12-05 18:52:16 | 2020-12-27T02:15Z | 2020-12-27T02:15:14 | CVE Published Date | updated |
| 2022-12-05 18:52:16 | 2020-12-31T19:04:39 | CVE Modified Date | updated | |
| 2022-12-05 18:52:16 | Analyzed | Vulnerability Status | updated |