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CVE-2021-35223— Execute Command Function Allows Remote Code Execution (RCE)Vulnerability

Quick assessment

Affected
SolarWinds Serv-U
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.

SolarWinds Serv-U FTP Server是美国SolarWinds公司的一套FTP和MFT文件传输软件。 SolarWinds Serv-U File Server 存在安全漏洞，该漏洞源于。Server - u File Server允许通过执行命令来审计用户登录失败等事件。该命令可以提供用户字符串变量形式的参数，从而允许远程代码执行。

CVSS 8.5 · High EPSS 2.94% · P87
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I. Basic Information for CVE-2021-35223

Vulnerability Information
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Vulnerability Title
Execute Command Function Allows Remote Code Execution (RCE)Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
The Serv-U File Server allows for events such as user login failures to be audited by executing a command. This command can be supplied with parameters that can take the form of user string variables, allowing remote code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Serv-U File Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SolarWinds Serv-U FTP Server是美国SolarWinds公司的一套FTP和MFT文件传输软件。 SolarWinds Serv-U File Server 存在安全漏洞，该漏洞源于。Server - u File Server允许通过执行命令来审计用户登录失败等事件。该命令可以提供用户字符串变量形式的参数，从而允许远程代码执行。
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
SolarWinds Serv-U 15.2.3 and previous versions ~ 15.2.4 -

II. Public POCs for CVE-2021-35223

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III. Intelligence Information for CVE-2021-35223

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Other References for CVE-2021-35223 (3)

Same Patch Batch · SolarWinds · 2021-08-31 · 9 CVEs total

CVE-2021-35212 8.9 HIGH Blind SQL injection Vulnerability
CVE-2021-35213 8.9 HIGH Orion User setting Improper Access Control Privilege Escalation Vulnerability
CVE-2021-35220 8.1 HIGH EmailWebPage Command Injection RCE
CVE-2021-35222 8.0 HIGH Resource.aspx Reflected Cross-Site Scripting Vulnerability
CVE-2021-35239 7.5 HIGH Stored XSS in Maps text box hyperlink Vulnerability
CVE-2021-35240 6.5 MEDIUM Stored XSS via Help Server settings
CVE-2021-35221 6.3 MEDIUM ImportAlert Improper Access Control Tampering Vulnerability
CVE-2021-35219 6.0 MEDIUM ExportToPdfCmd Arbitrary File Read Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Serv-U
Same vendor: SolarWinds
Same weakness: CWE-20

V. Comments for CVE-2021-35223

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