Category Archives: Potential Risk of CVE

CVE-2018-10299 – integer overflow jeopardize Ethereum Zone

In the view of cryptocurrency supporter, Ethereum is the best. The cyber incident occured in cryptocurrency world so far shift the security focus to e-wallet (end point). Perhaps the cyrpto platform itself contains design limitation. However the end point design of crypto currency platform looks have more space for improvement.

If you install the MetaMask browser plugin, you can manage your accounts in your browser. The keys are stored only on your browser, so you are the only one who has access to your account and the private key. But when the web browser encounter vulnerability. It may jeopardize your private key. So security urge the crypto currency owner make use of hardware token instead of software.

We understand that web3.js is a collection of libraries which allow you to interact with a local or remote Ethereum node, using a HTTP or IPC connection. Java application encounter  vulnerabilities caused end user encounter cyber attack is not a news. Above informative diagram shown the integer overflow vulnerability of Ethereum case study involves java applet on the client side. As a front end application, Java application may not aware that he is the accomplice with the cryptocurrency cyber security incident.

Return to reality. Below headline news shown the vulnerabilities occurred in Ethereum (see below for reference). I am wishing that above details can provides hints to you for reference.  Let’s us awaken the design weakness of Ethereum cypto currency platform.

Critical EOS Smart Contract Vulnerability Discovered By Auditing Firm

https://bitcoinexchangeguide.com/critical-eos-smart-contract-vulnerability-discovered-by-auditing-firm/

 

Siemens – (CVE-2018-4832): Siemens Security Advisory by Siemens Product 18th Apr 2018

The Gas and Petroleum industries requires automation to enhance their overall operation in last decade. And therefore the automation system setup requires Supervisory control and data acquisition (SCADA). We noticed that hackers targeted SCADA system installed in nuclear power facilities. We are living in digital age and therefore electricity power supply similar air and water. So system automation hardware vendor has responsibility to hardening their system design. Siemens found vulnerability in their Automation Technology Process control systems (PCS 7) on April last month. For more details, please refer below url for reference.

Vulnerability details

https://cert-portal.siemens.com/productcert/pdf/ssa-348629.pdf

My Speculation:

1. A denial of service vulnerability exists in the remote procedure call (RPC) facility due to a failure in communicating with the NTLM security provider when performing authentication of RPC requests. An anonymous attacker could exploit the vulnerability by sending a specially crafted RPC authentication request to a computer over the network. An attacker who successfully exploited this vulnerability could cause the computer to stop responding and automatically restart.

2. GetMachineName ( ) copies machine name to a fixed 32 byte buffer causes problem occurs.

Ethereum – CVE-2018-10468

As far as I remember, the goal of bitcoin technology aim to replace the traditional payment. In additional, the slogan of bitcoin is that it can provides a more secure way to send the money and it is hard to counterfeit.  We heard cyber security incidents happened in bitcoin industry frequently last year.  Ethereum , a most relieable and popular crypto currency in the bitcoin industy.  A vulnerability found in Ethereum that it give a way to hacker do the re-engineering. Hacker is able to transform the transfer function ( transferFrom()). Detail shown as below:

The transferFrom function of a smart contract implementation for Useless Ethereum Token (UET), an Ethereum ERC20 token, allows attackers to steal assets (e.g., transfer all victims’ balances into their account) because certain computations involving _value are incorrect, as exploited in the wild starting in December 2017, aka the “transferFlaw” issue.

For more details, please refer below url for reference.

https://peckshield.com/2018/04/28/transferFlaw/

6 vulnerabilities in some Huawei products – The culprit,SOAP!

The Simple Object Access Protocol (SOAP) invoking objects on remote machine.
It is XML-based messaging thus run on top of HTTP/HTTPS.
That is the reason why firewall cannot significant block them.

An announcement issued by HUAWEI. For more details, please refer below url for reference.

Security Advisory – Six Vulnerabilities in Some Huawei Products

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180207-01-soap-en

Attention: PeopleSoft Enterprise PeopleTools (Rich Text Editor) vulnerability – Apr 2018

CVE# Product Component Protocol Remote
Exploit
without
Auth.?
CVSS VERSION 3.0 RISK (see Risk Matrix Definitions) Supported Versions Affected Notes
Base
Score
Attack
Vector
Attack
Complex
Privs
Req’d
User
Interact
Scope Confid-
entiality
Inte-
grity
Avail-
ability
CVE-2018-2772 PeopleSoft Enterprise PeopleTools Rich Text Editor HTTP No 8.8 Network Low Low None Un-
changed
High High High 8.54, 8.55, 8.56

Attention: CVE-2018-2772

Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of PeopleSoft Enterprise PeopleTools accessible data as well as unauthorized read access to a subset of PeopleSoft Enterprise PeopleTools accessible data.

Official announcement shown below url for reference.

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

CVE-2018-0229: See whether is there any attack make use of this vulnerability transform another type of attack in future?

Seems firewall administrator do not take the single sign-on authentication method in firewall. Perhaps it can’t fulfill audit requirement.  Cisco found SAML Authentication Session Fixation Vulnerability. The vulnerability exists because there is no mechanism for the ASA or FTD Software to detect that the authentication request originates from the AnyConnect client directly. An attacker could exploit this vulnerability by persuading a user to click a crafted link and authenticating using the company’s Identity Provider (IdP).  My concerns is that see whether is there any attack make use of this vulnerability transform another type of attack in future?

Cisco Official announcement is shown as below:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asaanyconnect

Be alert! Vulnerability in the Java SE, Java SE Embedded and JRockit component of Oracle Java SE (subcomponent: Serialization). 

The security concerns on CVE-2018-2815, please staying alert. For more details, please see below:

  1. The Java Security Architecture (JSA) defines ways for unprivileged code to perform privileged operations using

AccessController.doPrivileged().

2. The method includes create a new PrivilegedIntrospectHelper.

3. The new PrivilegedIntrospectHelper will be executed on a privileged block. This block will all internalIntrospecthelper(bean,prop,value,request,param,ignoreMethodNF) which will allow to invoke encapsulation (setter).

4. Result:

With encapsulation we pretend that nothing is revealed about the internal representation of an object, and we interact with our components only through their public interfaces; a desirable attribute that we usually exploit later when we want to change the internal representation of data in a component without breaking any code from its users.

Official security update show as below url:

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

 

 

Apple security updates (Apr 2018)

My speculation on iOS 11.3.1 show on picture.This is the moment when silence is more expressive than all words ever spoken. For more details about official announcement. Please see below url for references:

About the security content of iOS 11.3.1

About the security content of Safari 11.1

https://support.apple.com/en-us/HT208741

About the security content of Security Update 2018-001

https://support.apple.com/en-us/HT208742

Schneider Electric Important Security Notification – Mar & Apr 2018

 

A flaws found in Schneider Electric’s Modicon M340 PLC Station P34 Module human machine interface (HMI) software since 2015. An official announcement by vendor since last month till now. From techincal point of view, Modicon product series programmable logic controller has large usage in electric, gas and oil supply industry. So related party must stay alert!

CVE-2018-7758: https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=SEVD-2018-074-04+MiCOM+Px4x+Rejuvenated.pdf&p_Doc_Ref=SEVD-2018-074-04

CVE-2018-7762: https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2018-081-01+Modicon+V1.2.pdf&p_Doc_Ref=SEVD-2018-081-01

CVE-2018-7759: https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Id=9601432352&p_File_Name=SEVD-2018-081-02+Modicon.pdf&p_Doc_Ref=SEVD-2018-081-02

CVE-2018-7242: https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2018-081-01+Modicon+V1.2.pdf&p_Doc_Ref=SEVD-2018-081-01

CVE-2018-7760 & CVE-2018-7761: https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Id=9601432352&p_File_Name=SEVD-2018-081-02+Modicon.pdf&p_Doc_Ref=SEVD-2018-081-02

CVE-2018-7240 & CVE-2018-7241: https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2018-081-01+Modicon+V1.2.pdf&p_Doc_Ref=SEVD-2018-081-01