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7.5
HIGH CVSS 3.1
CVE-2021-35250
Serv-U Directory Transversal Vulnerability
Description

A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1.

INFO

Published Date :

April 25, 2022, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 6:12 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-35250 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Solarwinds serv-u
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH [email protected]
Solution
A directory traversal vulnerability exists in Serv-U, potentially allowing unauthorized access; upgrade to a patched version and review the configuration to address this issue.
  • Upgrade Serv-U to version 15.3 Hotfix 1 or later.
  • Review the Serv-U configuration.
Public PoC/Exploit Available at Github

CVE-2021-35250 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-35250.

URL Resource
https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250 Vendor Advisory
https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-35250 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-35250 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
rissor41/SolarWinds-CVE-2021-35250

None

Updated: 4 months, 3 weeks ago
8 stars 6 fork 6 watcher
Born at : April 13, 2023, 5:13 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-35250 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-35250 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US
    Added Reference https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250
  • CVE Modified by [email protected]

    Sep. 17, 2024

    Action Type Old Value New Value
    Changed Description A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1. A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1.
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Aug. 03, 2023

    Action Type Old Value New Value
    Removed CWE SolarWinds CWE-538
    Added CWE SolarWinds CWE-22
    Removed CWE Reason CWE-538 / More specific CWE option available
  • Initial Analysis by [email protected]

    May. 05, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US No Types Assigned https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US Vendor Advisory
    Changed Reference Type https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250 No Types Assigned https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250 Vendor Advisory
    Added CWE NIST CWE-22
    Added CPE Configuration OR *cpe:2.3:a:solarwinds:serv-u:15.3:-:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

91.92 }} 0.28%

score

0.99683

percentile