Oracle WebLogic Server Multiple Vulnerabilities (Apr 2020 CPU)

critical Nessus Plugin ID 135680


The remote host is affected by multiple vulnerabilities


The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the CPUApr2020 advisory.

- A remote code execution vulnerability exists in the Log4j SocketServer class due to unsafe deserialization of untrusted data. An unauthenticated, remote attacker can exploit this to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17. (CVE-2019-17571)

- An information disclosure vulnerability exists in the Console component. An unauthenticated, remote attacker can exploit this to gain unauthorized read access to a subset of Oracle WebLogic Server accessible data. (CVE-2020-2766)

- A vulnerability in the WLS Web Services component exists. An authenticated, remote attacker can exploit this via T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. (CVE-2020-2798)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Apply the appropriate patch according to the April 2020 Oracle Critical Patch Update advisory.

See Also

Plugin Details

Severity: Critical

ID: 135680

File Name: oracle_weblogic_server_cpu_apr_2020.nasl

Version: 1.12

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 4/16/2020

Updated: 1/4/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: High

Score: 8.4


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2020-2884


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:oracle:fusion_middleware, cpe:/a:oracle:weblogic_server

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/14/2020

Vulnerability Publication Date: 4/14/2020

Exploitable With

Core Impact

Metasploit (WebLogic Server Deserialization RCE BadAttributeValueExpException ExtComp)

Reference Information

CVE: CVE-2019-16943, CVE-2019-17359, CVE-2019-17571, CVE-2020-2766, CVE-2020-2798, CVE-2020-2801, CVE-2020-2811, CVE-2020-2828, CVE-2020-2829, CVE-2020-2867, CVE-2020-2869, CVE-2020-2883, CVE-2020-2884, CVE-2020-2963

IAVA: 2020-A-0153