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CVE-2021-35249— Domain Admin Broken Access Control

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 FTP Server 15.3及其之前版本存在安全漏洞，该漏洞源于应用存在不恰当的访问控制。未授权的攻击者利用该漏洞可以访问其他域的配置和用户数据。

CVSS 4.3 · Medium EPSS 0.74% · P53

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-35249

Vulnerability Information
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Vulnerability Title
Domain Admin Broken Access Control
Source: CVE Program / CVE List V5
Vulnerability Description
This broken access control vulnerability pertains specifically to a domain admin who can access configuration & user data of other domains which they should not have access to. Please note the admin is unable to modify the data (read only operation). This UAC issue leads to a data leak to unauthorized users for a domain, with no log of them accessing the data unless they attempt to modify it. This read-only activity is logged to the original domain and does not specify which domain was accessed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Serv-U FTP Server 访问控制错误漏洞
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 15.3及其之前版本存在安全漏洞，该漏洞源于应用存在不恰当的访问控制。未授权的攻击者利用该漏洞可以访问其他域的配置和用户数据。
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 15.3 and previous versions ~ 15.3.1 -

II. Public POCs for CVE-2021-35249

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III. Intelligence Information for CVE-2021-35249

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Other References for CVE-2021-35249 (2)

IV. Related Vulnerabilities

Same product: Serv-U
Same vendor: SolarWinds
Same weakness: CWE-284

V. Comments for CVE-2021-35249

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