Executive Summary

This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Title TP-Link EAP Controller lacks RMI authentication and is vulnerable to deserialization attacks
NameVU#581311First vendor Publication2018-09-26
VendorVU-CERTLast vendor Modification2018-10-26
Severity (Vendor) N/ARevisionM

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score10Attack RangeNetwork
Cvss Impact Score10Attack ComplexityLow
Cvss Expoit Score10AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores


Vulnerability Note VU#581311

TP-Link EAP Controller lacks RMI authentication and is vulnerable to deserialization attacks

Original Release date: 26 Sep 2018 | Last revised: 26 Oct 2018


The TP-LINK EAP Controller is TP-LINK's software for remotely controlling wireless access point devices. EAP Controller for Linux lacks user authentication for RMI service commands, as well as utilizes an outdated vulnerable version of Apache commons-collections, which may allow an attacker to implement deserialization attacks and control the EAP Controller server.


CWE-306: Missing Authentication for Critical Function - CVE-2018-5393

EAP Controller for Linux utilizes a Java remote method invocation (RMI) service for remote control. The RMI interface does not require any authentication before use. Remote attackers can implement deserialization attacks through the RMI protocol. Successful attacks may allow a remote attacker to remotely control the target server and execute Java functions or bytecode.

CWE-502: Deserialization of Untrusted Data - CVE-2015-6420

EAP Controller for Linux bundles a vulnerable version of Apache commons-collections v3.2.1 with the software, which appears to be the root cause of the vulnerability. Therefore, EAP Controller v2.5.3 and earlier are vulnerable to CVE-2015-6420 as documented in VU#576313.

EAP Controller v2.5.3 and earlier for Linux are affected by both vulnerabilities.


A Java application or library with the Apache Commons Collections library in its classpath may be coerced into executing arbitrary Java functions or bytecode.


There is currently no available update to EAP Controller to fully address the vulnerability. However, affected users may take the following actions to help mitigate and reduce risk. As described in VU#576313, updating the vulnerable libraries does not necessarily eliminate the vulnerability in all scenarios.

Update Apache commons-collections

Affected users should update the system Apache commons-collections library to at least version 3.2.2 or 4.1. For details, please see VU#576313.

Update the JRE version of EAP

Affected users should also update the Java Runtime Environment (JRE) used by EAP to the latest available version. Recent versions of JRE have improved deserialization protection features.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
TP-LINKAffected03 Jul 201816 Oct 2018
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)



  • https://www.kb.cert.org/vuls/id/576313
  • https://www.tp-link.com/en/download/EAP220.html#Controller_Software
  • https://docs.oracle.com/javase/8/docs/technotes/guides/rmi/rmi_security_recommendations.html
  • http://cwe.mitre.org/data/definitions/306.html
  • http://cwe.mitre.org/data/definitions/502.html


Thanks to Liu Zhu, of Huawei Weiran Lab for reporting this vulnerability.

This document was written by Garret Wassermann.

Other Information

  • CVE IDs:CVE-2018-5393CVE-2015-6420
  • Date Public:18 Sep 2018
  • Date First Published:26 Sep 2018
  • Date Last Updated:26 Oct 2018
  • Document Revision:95


If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/581311

CWE : Common Weakness Enumeration

50 %CWE-502Deserialization of Untrusted Data
50 %CWE-306Missing Authentication for Critical Function (CWE/SANS Top 25)

CPE : Common Platform Enumeration


Nessus® Vulnerability Scanner

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File : cisco_cucm_CSCux34835.nasl - Type : ACT_GATHER_INFO

Alert History

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2019-01-08 00:21:30
  • Multiple Updates
2018-10-27 00:18:28
  • Multiple Updates
2018-10-26 21:19:47
  • Multiple Updates
2018-10-16 21:18:35
  • Multiple Updates
2018-09-28 21:21:44
  • Multiple Updates
2018-09-26 17:18:39
  • First insertion