CVE-2020-2883

Oracle WebLogic Server T3 Protocol Deserialization of Untrusted Data Remote Code Execution Vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*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 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Vulnerabilidad en el producto Oracle WebLogic Server de Oracle Fusion Middleware (componente: Core). Las versiones compatibles que se ven afectadas son 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 y 12.2.1.4.0. La vulnerabilidad fácilmente explotable permite que un atacante no autenticado con acceso a la red a través de IIOP, T3 comprometa el servidor Oracle WebLogic. Los ataques con éxito de esta vulnerabilidad pueden resultar en la adquisición de Oracle WebLogic Server. Puntaje base CVSS 3.0 9.8 (Confidencialidad, integridad y impactos de disponibilidad). Vector CVSS: (CVSS: 3.0 / AV: N / AC: L / PR: N / UI: N / S: U / C: H / I: H / A: H).

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle WebLogic. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the Oracle Coherence library. 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 the service account.

*Credits: Quynh Le of VNPT ISC

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

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2019-12-10 CVE Reserved
2020-04-15 CVE Published
2020-05-10 First Exploit
2024-09-27 CVE Updated
2024-10-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (8)

URL	Tag	Source
http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.html	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-504	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-570	Third Party Advisory

URL	Date	SRC
https://github.com/Y4er/CVE-2020-2883	2020-05-10
https://github.com/Al1ex/CVE-2020-2883	2020-11-27
https://github.com/FancyDoesSecurity/CVE-2020-2883	2020-10-14
https://github.com/ZZZWD/CVE-2020-2883	2020-06-09

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2020.html	2022-10-14

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"				10.3.6.0.0 Search vendor "Oracle" for product "Weblogic Server" and version "10.3.6.0.0"		-		Affected
Oracle Search vendor "Oracle"		Weblogic Server Search vendor "Oracle" for product "Weblogic Server"				12.1.3.0.0 Search vendor "Oracle" for product "Weblogic Server" and version "12.1.3.0.0"		-		Affected
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