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CVE-2021-43928

Quick assessment

Affected
Synology Mail Station
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 中存在操作系统命令注入漏洞，该漏洞源于产品的邮件发送和接收组件未能正确处理接收命令中的特殊字符。攻击者可通过该漏洞执行任意命令。以下产品及版本受到影响：Synology mail Station 7.0.1-42218-2 之前版本。

CVSS 9.9 · Critical EPSS 1.86% · P79

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-43928

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability in mail sending and receiving component in Synology Mail Station before 20211105-10315 allows remote authenticated users to execute arbitrary commands via unspecified vectors.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Synology DiskStation Manager 操作系统命令注入漏洞
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 中存在操作系统命令注入漏洞，该漏洞源于产品的邮件发送和接收组件未能正确处理接收命令中的特殊字符。攻击者可通过该漏洞执行任意命令。以下产品及版本受到影响：Synology mail Station 7.0.1-42218-2 之前版本。
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 Mail Station unspecified ~ 20211105-10315 -

II. Public POCs for CVE-2021-43928

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III. Intelligence Information for CVE-2021-43928

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Other References for CVE-2021-43928 (1)

Same Patch Batch · Synology · 2022-02-07 · 7 CVEs total

CVE-2022-22679 6.5 MEDIUM Synology DiskStation Manager 路径遍历漏洞
CVE-2021-43929 6.5 MEDIUM Synology DiskStation Manager 跨站脚本漏洞
CVE-2022-22680 5.3 MEDIUM Synology DiskStation Manager 信息泄露漏洞
CVE-2021-43927 4.7 MEDIUM Synology DiskStation Manager SQL注入漏洞
CVE-2021-43926 4.7 MEDIUM Synology DiskStation Manager SQL注入漏洞
CVE-2021-43925 4.7 MEDIUM Synology DiskStation Manager SQL注入漏洞

IV. Related Vulnerabilities

Same vendor: Synology
Same weakness: CWE-78

V. Comments for CVE-2021-43928

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