// For flags

CVE-2023-21838

Oracle WebLogic Server IIOP Protocol Deserialization of Untrusted Data Denial-of-Service Vulnerability

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle WebLogic Server. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Oracle WebLogic Server. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the IIOP protocol. Crafted data in an IIOP protocol message can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: r00t4dm
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
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2022-12-17 CVE Reserved
  • 2023-01-17 CVE Published
  • 2024-09-17 CVE Updated
  • 2024-11-19 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
https://www.oracle.com/security-alerts/cpujan2023.html 2023-01-24
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Oracle
Search vendor "Oracle"
 Weblogic Server
Search vendor "Oracle" for product "Weblogic Server"
 12.2.1.3.0
Search vendor "Oracle" for product "Weblogic Server" and version "12.2.1.3.0"
-
Affected
Oracle
Search vendor "Oracle"
 Weblogic Server
Search vendor "Oracle" for product "Weblogic Server"
 12.2.1.4.0
Search vendor "Oracle" for product "Weblogic Server" and version "12.2.1.4.0"
-
Affected
Oracle
Search vendor "Oracle"
 Weblogic Server
Search vendor "Oracle" for product "Weblogic Server"
 14.1.1.0.0
Search vendor "Oracle" for product "Weblogic Server" and version "14.1.1.0.0"
-
Affected