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CVE-2021-35252— Common Key Vulnerability in Serv-U FTP Server

Quick assessment

Affected
SolarWinds Serv-U FTP Server
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 FTP Server存在授权问题漏洞，该漏洞源于其所有实例部署通用加密密钥导致暴露给攻击者的加密值可以简单地恢复为明文。

CVSS 7.5 · High EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials
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I. Basic Information for CVE-2021-35252

Vulnerability Information
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Vulnerability Title
Common Key Vulnerability in Serv-U FTP Server
Source: CVE Program / CVE List V5
Vulnerability Description
Common encryption key appears to be used across all deployed instances of Serv-U FTP Server. Because of this an encrypted value that is exposed to an attacker can be simply recovered to plaintext.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Serv-U FTP Server 授权问题漏洞
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 FTP Server存在授权问题漏洞，该漏洞源于其所有实例部署通用加密密钥导致暴露给攻击者的加密值可以简单地恢复为明文。
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 FTP Server 15.3.0 -

II. Public POCs for CVE-2021-35252

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III. Intelligence Information for CVE-2021-35252

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Vendor Advisories for CVE-2021-35252 (1)

Other References for CVE-2021-35252 (2)

IV. Related Vulnerabilities

Same vendor: SolarWinds
Same weakness: CWE-798

V. Comments for CVE-2021-35252

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