// For flags

CVE-2021-21242

Pre-Auth Unsafe Deserialization on AttachmentUploadServet

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which can lead to pre-auth remote code execution. AttachmentUploadServlet deserializes untrusted data from the `Attachment-Support` header. This Servlet does not enforce any authentication or authorization checks. This issue may lead to pre-auth remote code execution. This issue was fixed in 4.0.3 by removing AttachmentUploadServlet and not using deserialization

OneDev es una plataforma devops todo en uno. En OneDev versiones anteriores a 4.0.3, Se presenta una vulnerabilidad crítica que puede conllevar a una ejecución de código remota previa a la autenticación. El componente AttachmentUploadServlet deserializa los datos no confiables desde el encabezado "Attachment-Support". Este Servlet no aplica ninguna comprobación de autenticación o autorización. Este problema puede causar una ejecución de código remota previa a la autenticación. Este problema es corregido en versión 4.0.3 al eliminar AttachmentUploadServlet y no usar la deserialización

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-22 CVE Reserved
  • 2021-01-15 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-11-04 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
  • CWE-502: Deserialization of Untrusted Data
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Onedev Project
Search vendor "Onedev Project"
Onedev
Search vendor "Onedev Project" for product "Onedev"
< 4.0.3
Search vendor "Onedev Project" for product "Onedev" and version " < 4.0.3"
-
Affected