// For flags

CVE-2021-40524

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In Pure-FTPd before 1.0.50, an incorrect max_filesize quota mechanism in the server allows attackers to upload files of unbounded size, which may lead to denial of service or a server hang. This occurs because a certain greater-than-zero test does not anticipate an initial -1 value. (Versions 1.0.23 through 1.0.49 are affected.)

En Pure-FTPd antes de la versión 1.0.50, un mecanismo incorrecto de cuota max_filesize en el servidor permite a los atacantes subir archivos de tamaño no limitado, lo que puede llevar a la denegación de servicio o a la caída del servidor. Esto ocurre porque una determinada prueba mayor que cero no anticipa un valor inicial de -1. (Están afectadas las versiones 1.0.23 a 1.0.49)

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-05 CVE Reserved
  • 2021-09-05 CVE Published
  • 2024-04-11 EPSS Updated
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-434: Unrestricted Upload of File with Dangerous Type
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Pureftpd
Search vendor "Pureftpd"
 Pure-ftpd
Search vendor "Pureftpd" for product "Pure-ftpd"
 >= 1.0.23 < 1.0.50
Search vendor "Pureftpd" for product "Pure-ftpd" and version " >= 1.0.23 < 1.0.50"
-
Affected