// For flags

CVE-2021-35247

SolarWinds Serv-U Improper Input Validation Vulnerability

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

Serv-U web login screen to LDAP authentication was allowing characters that were not sufficiently sanitized. SolarWinds has updated the input mechanism to perform additional validation and sanitization. Please Note: No downstream affect has been detected as the LDAP servers ignored improper characters. To insure proper input validation is completed in all environments. SolarWinds recommends scheduling an update to the latest version of Serv-U.

La pantalla de inicio de sesión web de Serv-U para la autenticación LDAP permitía caracteres que no estaban suficientemente desinfectados. SolarWinds ha actualizado el mecanismo de entrada para realizar una validación y sanitización adicionales. Nota: No se ha detectado ninguna afectación posterior, ya que los servidores LDAP ignoraban los caracteres inadecuados. Para asegurar que la validación de la entrada se completa en todos los entornos. SolarWinds recomienda programar una actualización a la última versión de Serv-U

SolarWinds Serv-U versions 15.2.5 and earlier contain an improper input validation vulnerability that allows attackers to build and send queries without sanitization.

*Credits: SolarWinds would like to thank Jonathan Bar Or of Microsoft (@yo_yo_yo_jbo) for reporting this vulnerability
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-22 CVE Reserved
  • 2022-01-07 CVE Published
  • 2022-01-21 Exploited in Wild
  • 2022-02-04 KEV Due Date
  • 2024-08-11 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
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"
 < 15.3
Search vendor "Solarwinds" for product "Serv-u" and version " < 15.3"
-
Affected