Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-35242— A valid CSRF token is present in response to an invalid request

Quick assessment

Affected
SolarWinds Serv-U 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。 Serv-U 服务器存在安全漏洞，该漏洞源于当请求只包含 Session 时，Serv-U 服务器用有效的 CSRFToken 响应。

CVSS 8.3 · High EPSS 0.73% · P51

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-35242

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
A valid CSRF token is present in response to an invalid request
Source: CVE Program / CVE List V5
Vulnerability Description
Serv-U server responds with valid CSRFToken when the request contains only Session.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Serv-U FTP Server 服务器 跨站请求伪造漏洞
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。 Serv-U 服务器存在安全漏洞，该漏洞源于当请求只包含 Session 时，Serv-U 服务器用有效的 CSRFToken 响应。
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 Server 15.2.4 Hotfix 1 and previous versions ~ 15.2.5 -

II. Public POCs for CVE-2021-35242

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-35242

请登录查看更多情报信息。

Other References for CVE-2021-35242 (2)

IV. Related Vulnerabilities

Same vendor: SolarWinds
Same weakness: CWE-352

V. Comments for CVE-2021-35242

No comments yet

Leave a comment