CVE-2020-27648
Quick assessment
Affected
Synology DiskStation Manager (DSM)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Synology DiskStation Manager（DSM）是中国台湾群晖科技（Synology）公司的一套用于网络储存服务器（NAS）上的操作系统。该操作系统可管理资料、文件、照片、音乐等信息。 Synology DiskStation Manager (DSM) 6.2.3-25426-2之前版本存在安全漏洞，该漏洞源于OpenVPN客户端存在不适当的证书验证漏洞，攻击者可利用该漏洞通过制作的证书欺骗服务器，获取敏感信息。
Possible ATT&CK Techniques 3 AI
T1071 · Application Layer Protocol T1078 · Valid Accounts T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2020-27648
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper certificate validation vulnerability in OpenVPN client in Synology DiskStation Manager (DSM) before 6.2.3-25426-2 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Synology DiskStation Manager 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Synology DiskStation Manager（DSM）是中国台湾群晖科技（Synology）公司的一套用于网络储存服务器（NAS）上的操作系统。该操作系统可管理资料、文件、照片、音乐等信息。 Synology DiskStation Manager (DSM) 6.2.3-25426-2之前版本存在安全漏洞，该漏洞源于OpenVPN客户端存在不适当的证书验证漏洞，攻击者可利用该漏洞通过制作的证书欺骗服务器，获取敏感信息。
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 |
|---|---|---|---|---|
| Synology | DiskStation Manager (DSM) | unspecified ~ 6.2.3-25426-2 | - |
|
II. Public POCs for CVE-2020-27648
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2020-27648 (2)
-
https://www.synology.com/security/advisory/Synology_SA_20_18 x_refsource_CONFIRM
Same Patch Batch · Synology · 2020-10-29 · 11 CVEs total
| CVE-2020-27654 | 9.8 CRITICAL | Synology Router Manager 访问控制错误漏洞 |
| CVE-2020-27652 | 8.3 HIGH | Synology DiskStation Manager 加密问题漏洞 |
| CVE-2020-27653 | 8.3 HIGH | Synology Router Manager 加密问题漏洞 |
| CVE-2020-27649 | 8.3 HIGH | Synology Router Manager 信任管理问题漏洞 |
| CVE-2020-27658 | 7.1 HIGH | Synology Router Manager 安全漏洞 |
| CVE-2020-27656 | 6.5 MEDIUM | Synology DiskStation Manager 信息泄露漏洞 |
| CVE-2020-27657 | 6.5 MEDIUM | Synology Router Manager 安全漏洞 |
| CVE-2020-27655 | 6.5 MEDIUM | Synology Router Manager 访问控制错误漏洞 |
| CVE-2020-27650 | 5.8 MEDIUM | Synology DiskStation Manager 安全漏洞 |
| CVE-2020-27651 | 5.8 MEDIUM | Synology Router Manager 安全漏洞 |
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