// For flags

CVE-2020-4450

IBM WebSphere Application Server IIOP Deserialization of Untrusted Data Remote Code Execution Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects. IBM X-Force ID: 181231.

IBM WebSphere Application Server versiones 8.5 y 9.0 traditional, podría permitir a un atacante remoto ejecutar código arbitrario en el sistema con una secuencia de objetos serializados especialmente diseñada. ID de IBM X-Force: 181231

This vulnerability allows remote attackers to execute arbitrary code on affected installations of IBM WebSphere. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the IIOP protocol. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of root.

*Credits: tint0
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
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-30 CVE Reserved
  • 2020-06-05 CVE Published
  • 2022-08-17 First Exploit
  • 2024-05-28 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • 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
Ibm
Search vendor "Ibm"
 Websphere Application Server
Search vendor "Ibm" for product "Websphere Application Server"
 >= 8.5.0.0 < 8.5.5.18
Search vendor "Ibm" for product "Websphere Application Server" and version " >= 8.5.0.0 < 8.5.5.18"
-
Affected
Ibm
Search vendor "Ibm"
 Websphere Application Server
Search vendor "Ibm" for product "Websphere Application Server"
 >= 9.0.0.0 < 9.0.5.5
Search vendor "Ibm" for product "Websphere Application Server" and version " >= 9.0.0.0 < 9.0.5.5"
-
Affected