Category Archives: Under our observation

Do not contempt CVE-2018-6973 (VMware workstation)-Out-of-bounds-write-14thAug2018

Since the popularity of VM machine. Software development team and IT operations team will do the testing on their own premises in the first. May be you would say, this is not compliance for best practice. But the fact is that this is one of the way. VMware alert to public last week (14th Aug 2018 -CVE-2018-6973). In high level point of view, this vulnerability only occurs in VMware Workstation and Fusion products. VMware workstation is a solution for running virtual machines on Windows and Linux, while Fusion is used for running virtual machines on macOS. So the popularity and volume of usage will be much high than VM server in public. But do not contempt this bug, if such vulnerabilities occurs in your local workstation. It will jeopardizes your infrastructure because you workstation will become vulnerable. Wishing that the attached pictures can tell you the story.

Official reference details shown as below:

8th Aug 2018 – ISC Releases Security Advisory for BIND

If you are easy nervous, seems IT job not suitable for you! The Domain Name System (DNS) is the backbone of the modern internet. The workstation similar a blind people searching the correct pathway in the dark. ISC releases security advisory for BIND yesterday. My roughly statistic shown to me that this is the third times within this year!

A technical feature so called “Deny-answer-aliases” design to protect end users against DNS rebinding attack. A defact causes an INSIST assertion failure in named. causing the named process to stop execution and resulting in denial of services to client. What is Named. The Named is a Domain Name System (DNS) server, part of the BIND 9 distribution from ISC. Named will read the default configuration file /etc/named.conf, read any initial data, and listen for queries. For more details about this vulnerability. Please refer the following –

ISC BIND vulnerabilities details on May and June this year.

June 2018

June 13, 2018 – ISC Releases Security Advisory for BIND


May 2018

May 18, 2018 – ISC Releases Security Advisories for BIND

Aug 2018 – Do not contempt this vulnerability (CVE-2018-5390)

The hardware vendors deploy Linux OS on demand growth. Even though your firewall appliances, malware detector, load balancer, network L2 and L3 switch and IoT devices are the Linux. The attacker found a tricks recently. If source device feeds tiny packets completely out of order. The parameter (tcp_collapse_ofo_queue()) might scan the whole rb-tree. As a result , attacker can induce a denial of service condition by sending specially modified packets within ongoing TCP sessions. I think the specfiy vulnerability we can not contempt. The worst case is that attacker is possible to conduct denial of services on non-patch hardware appliances and IoT devices.
In the meantime, we are waiting for hardware vendor responses?

US CERT official announcement shown as below:

Linux Kernel TCP implementation vulnerable to Denial of Service

Original Release date: 06 Aug 2018 | Last revised: 06 Aug 2018

Aug 2018 – Similar to establish new challenge in IT world, mingw-w64 design limitation!

Address space layout randomization (ASLR) is a computer security technique involved in preventing exploitation of memory corruption vulnerabilities. ASLR function like the last line of defense of the system against cyber attack. Recently, security expert comment that the software application developer might not following guideline issue by CPU vendor. The fact is that an error occur on their software application when apply ASLR or SGX ( Software Guard Extensions – Intel). As a result, the non compliance application products will be available in the cyber world.

The actual scenario is that several tools that check for ASLR compatibility assume that the presence of the “Dynamic base” PE header is sufficient for ASLR compatibility. Because Process Explorer does not check that a relocation table is present, its indication of “ASLR” for a running process may be incorrect, and it may provides room for malware alive. I forseen that it may create the impact to the docker environment.


MinGW is an implementation of most of the GNU building utilities, like gcc and make on windows, while gcc is only the compiler. It looks that it has more Linux operating system includes in ASLR non compatible checklist announced by MinGW. The CPU vendor on the way to address the CPU design flaw (Meltdown and Spectre). It looks that a new form of challenge is going to join into the mistaken task force.

Should you have interest. Below hyperlink can provides the detail.

Vulnerability Note VU#307144 : mingw-w64 by default produces executables that opt in to ASLR, but are not compatible with ASLR

Synopsis- NIST plan to retire SMS function deployed for two Factor Authentication

As of today, we are enjoying the security protection of 2 factor authentication with SMS-based one-time passwords (OTP). This protection mechanism was distributed widely. For instance, online banking, Visa,Master credit card online payment system and mobile application payment system. However NIST plan to retire SMS base 2 factor authentication. This decision has similar a open topic for public discussion in related industry since end of 2016. Some of the people queries of the technical standpoint of this decision.

Background – NIST-800-63-3 equivalent a bible for CSO (chief security officer) in the world. Even though you business not focusing US market.  The documentation structure of NIST SP 800-63A is the subset of 800-63-3. This subset of guidelines was specify address digital identity guidelines. Item indicate the address confirmation including SMS. (below hyperlink for official document download).

Reference: Two-factor authentication uses two different factors of below namely, “something you have” (e.g. mobile phones), “something you are” (e.g. fingerprints) or “something you know” (e.g. password), to authenticate a user identity.

SMS messages system design limitation (see below):

  1. SIM swap is a type of phishing fraud that poses a serious threat to mobile phone user. As a result, all calls and texts to the victim’s number are routed to the fraudster’s phone, including one-time passwords
  2. SMS Messages Can Be Intercepted in Many Ways (problem in SS7)
  3. ASN.1 design flaw

Should you have interest of item 2 and 3? Please refer below:

SS7 flaw make two factor authentication insecure – Reveal the veil



Are you aware of the need to improve the security of Internet-enabled devices?

Since IoT device only contained limited free space and memory and therefore it is hard to install the defense solution. A concern of the intellectual property right and therefore vendor do not want to disclose the firmware of their products. So it lack of knowledge let 3rd party vendor developer value-add defense solution. IoT looks like a ant in cyber world. In certain point of view, they are nothing in your point of view. However careless mistake especially do not change the default admin password could took the IoT join to criminal cyber army task force. Perhaps some IoT devices do not have instruction for end user how to modify the password. As time goes by they are a potentail dark force.

The following are important steps you should consider to make your Internet of Things secure.

1. Choose the appropriate product – conside the IoT products which can change the default password.

2. Ensure you have up-to-date software install in your IoT device.

3. Consider whether continuous connectivity to the Internet is needed.

Below article is the analytic document issuded by FBI for your perusal.

Subject: Cyber Actors Use Internet of Things Devices as Proxies for Anonymity and Pursuit of Malicious Cyber Activities

1st Aug 2018 – Cisco Secuirty Advisory CVE-2018-0391

Cisco Prime Collaboration Provisioning provides a scalable web-based solution to manage your company’s next-generation communication services. CiscoPrimeCollaboration Provisioning manages IPcommunication endpoints and services in an integrated IP telephony, video, voicemail and unified messaging environment
that includes Cisco Unified Communications Manager, Cisco Unified Communications  Manager Express, Cisco Unity Express, Cisco Unity Connection systems and analog gateways.

But the technical issue on authentication especially password looks can’t been resolved yet! I am not going to move the focus to conspiracy topic somethings like backdoor rumours. From technical point of view, the architecture relies on https. Refer to attached diagram, whether any similar architecture there and trigger traditional service ID issue. Since the traditional service ID on web will be store in someplace and it is hardcode.
Offical announcement shown below URL:

2018-07-18 – Jenkins Security Advisory

Jenkins is the leading open-source automation server. Built with Java, it provides over 1000 plugins to support automation. Is it a robot?

Basically, Jenkins is commonly used for building projects, running tests to detect bugs and other issues as soon as they are introduced, static code analysis and deployment.

For instance combining Jenkins and Docker together can bring improved speed and consistency to your automation tasks.

That is you can configure Jenkins to build Docker Images based on a Dockerfile. You can use Docker within a CI/CD pipeline, using Images as a build artefact that can be promoted to different environments and finally production. Usually, the freestyle automated job can create to accomplish a specific task in the CI pipeline, it can be compile the code, run integration tests or deploy application.


A complete CI pipeline is made up of three major parts: Integration: Build code and run unit tests.

Delivery: Deploy your application to a staging or production environment.

If Jenkins is sick (vulnerabilities) today? Any worries about that?

An official announment state the following:


CYBER SECURITY ADVISORY – Panel Builder 800,Improper input validation vulnerability (CVE-2018-10616)

Retrospectively cyber attack encountered on Nuclear power facility in past. The SCADA system facilities vendor are working hard to hardening their device and provided cyber security advisory. An cyber security alert announced by ABB that a software engineering tool for configure Panel 800 has vulnerability occurs. ABB Panel Builder 800 all versions has an improper input validation vulnerability which may allow an attacker to insert and run arbitrary code on a computer where the affected product is used. However the vulnerabilites indicated that theattacker could create a specially crafted file and try to trick a person using the Panel Builder 800 to open this file (see below hyperlink – technical note)

Perhaps the techincal limitation sometimes was happened in their fundemental design. See Alert B in attached diagram. Since panel 800 is a Intel CPU base with Windows CE OS. My concern is that It is not known whether Intel XScale or Marvell Feroceon cores are affected by these issues (Meltdown and Spectre)? But no worries, tomorrow will be a better day!


25th JUl 2018 – Malicious Cyber Activity Targeting ERP Applications (Stay alert!)


A consulting firm observe that the abuse of the SAP Invoker Servlet rapidly increase (built-in functionality in SAP NetWeaver Application Server Java systems (SAP Java platforms)). The fact is that customer may not aware or encounter technical difficulties to remediate a former vulnerability. May be a new attack (former vulnerability + Zero day) let the risk happens.

Quick step of remediation in the moment:

1. Scan systems for all known vulnerabilities, such as missing security patches and dangerous system configurations.

2. Analyze systems for malicious or excessive user authorizations.

3. Monitor systems for indicators of compromise resulting from the exploitation of vulnerabilities.

4. Apply threat intelligence on new vulnerabilities to improve the security posture against advanced targeted attacks.

Should you have interest of the report. You can go to this place to download.