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CVE-2021-29087

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)存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞通过未指定的向量写任意文件。

CVSS 7.5 · High EPSS 1.40% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-29087

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to write arbitrary files via unspecified vectors.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Synology DiskStation Manager 路径遍历漏洞
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)存在安全漏洞，该漏洞允许远程攻击者可利用该漏洞通过未指定的向量写任意文件。
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 ~ 6.2.3-25426-3 -

II. Public POCs for CVE-2021-29087

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III. Intelligence Information for CVE-2021-29087

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Other References for CVE-2021-29087 (1)

Same Patch Batch · Synology · 2021-06-23 · 5 CVEs total

CVE-2021-27649 9.8 CRITICAL Synology DiskStation Manager 资源管理错误漏洞
CVE-2021-29085 8.6 HIGH Synology DiskStation Manager 注入漏洞
CVE-2021-29084 7.5 HIGH Synology DiskStation DS418play 注入漏洞
CVE-2021-29086 5.3 MEDIUM Synology DiskStation Manager 信息泄露漏洞

IV. Related Vulnerabilities

Same product: DiskStation Manager (DSM)
Same vendor: Synology
Same weakness: CWE-22

V. Comments for CVE-2021-29087

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