CVE-2021-35223

Execute Command Function Allows Remote Code Execution (RCE)Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El Servidor de Archivos Serv-U permite auditar eventos como los fallos de inicio de sesión de los usuarios mediante la ejecución de un comando. Este comando puede ser suministrado con parámetros que pueden tomar la forma de variables de cadena de usuario, permitiendo la ejecución remota de código

*Credits: SolarWinds would like to thank Exodus Intelligence (exodusintel.com) for reporting on the issue in a responsible manner

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-22 CVE Reserved
2021-08-31 CVE Published
2023-07-18 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htm	2021-09-16
https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_US	2021-09-16
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35223	2021-09-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Solarwinds Search vendor "Solarwinds"		Serv-u Search vendor "Solarwinds" for product "Serv-u"				< 15.2.4 Search vendor "Solarwinds" for product "Serv-u" and version " < 15.2.4"		-		Affected