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CVE-2021-47960

Quick assessment

Affected
Synology Synology SSL VPN Client
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 SSL VPN Client是中国群晖（Synology）公司的一款用于安全连接Synology NAS的VPN客户端软件。 Synology SSL VPN Client 1.4.5-0684之前版本存在安全漏洞，该漏洞源于外部可访问文件或目录，可能导致远程攻击者通过本地HTTP服务器访问安装目录中的敏感文件，造成信息泄露。

CVSS 6.5 · Medium EPSS 0.19% · P8
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I. Basic Information for CVE-2021-47960

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A files or directories accessible to external parties vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access files within the installation directory via a local HTTP server bound to the loopback interface. By leveraging user interaction with a crafted web page, attackers may retrieve sensitive files such as configuration files, certificates, and logs, leading to information disclosure.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Synology SSL VPN Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Synology SSL VPN Client是中国群晖（Synology）公司的一款用于安全连接Synology NAS的VPN客户端软件。 Synology SSL VPN Client 1.4.5-0684之前版本存在安全漏洞，该漏洞源于外部可访问文件或目录，可能导致远程攻击者通过本地HTTP服务器访问安装目录中的敏感文件，造成信息泄露。
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 Synology SSL VPN Client * ~ 1.4.5-0684 -

II. Public POCs for CVE-2021-47960

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III. Intelligence Information for CVE-2021-47960

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Vendor Advisories for CVE-2021-47960 (1)

IV. Related Vulnerabilities

Same product: Synology SSL VPN Client
Same vendor: Synology
Same weakness: CWE-552

V. Comments for CVE-2021-47960

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