CVE-2020-8290
Quick assessment
Affected
n/a Backblaze
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Backblaze是美国Backblaze公司的一款云端备份服务。 Backblaze for Windows and Backblaze for macOS 7.0.0.439之前版本存在权限许可和访问控制问题漏洞，该漏洞源于在创建客户端更新目录之前缺乏权限处理和验证，允许通过恶意客户端更新二进制文件本地升级权限。
Possible ATT&CK Techniques 2 AI
T1055 · Process Injection T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-8290
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Backblaze 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Backblaze是美国Backblaze公司的一款云端备份服务。 Backblaze for Windows and Backblaze for macOS 7.0.0.439之前版本存在权限许可和访问控制问题漏洞，该漏洞源于在创建客户端更新目录之前缺乏权限处理和验证，允许通过恶意客户端更新二进制文件本地升级权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | Backblaze | Prior to 7.0.0.439 | - |
|
II. Public POCs for CVE-2020-8290
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2020-8290 – Elevation of Privilege in Backblaze | https://github.com/geffner/CVE-2020-8290 | POC Details |
AI-Generated POC
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Other References for CVE-2020-8290 (3)
-
https://github.com/geffner/CVE-2020-8290/blob/master/README.md x_refsource_MISC
-
https://youtu.be/OpC6neWd2aM x_refsource_MISC
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https://hackerone.com/reports/818857 x_refsource_MISC
Same Patch Batch · n/a · 2020-12-27 · 12 CVEs total
| CVE-2020-35736 | Liftoff GateOne 路径遍历漏洞 | |
| CVE-2020-29156 | WordPress plugin WooCommerce 权限许可和访问控制问题漏洞 | |
| CVE-2020-29250 | Cxuucms 跨站脚本漏洞 | |
| CVE-2020-29249 | Cxuucms 跨站脚本漏洞 | |
| CVE-2020-29299 | Zyxel ZLD和Zyxel SD-OS 命令注入漏洞 | |
| CVE-2020-29204 | XXL-JOB 跨站脚本漏洞 | |
| CVE-2020-35729 | KLog Server 操作系统命令注入漏洞 | |
| CVE-2020-35728 | FasterXML jackson-databind 代码问题漏洞 | |
| CVE-2020-35448 | GNU Binutils 缓冲区错误漏洞 | |
| CVE-2020-8289 | Backblaze 信任管理问题漏洞 | |
| CVE-2020-35678 | Python 输入验证错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2020-8290
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