Much of the Python ecosystem already uses urllib3 but no exception. It has vulnerability occurred! CVE-2019-11324 – 23rd Apr 2019.

Preface: An IT ecosystem is “the network of organizations that drives the creation and delivery of information technology products and services.

About urllib3: Much of the Python ecosystem already uses urllib. It brings additional features that are missing from the Python standard libraries. For instance – Client-side SSL/TLS verification, Helpers for retrying requests and dealing with HTTP redirects,……

Vulnerability details: A vulnerability in urllib3 could allow an unauthenticated, remote attacker to bypass security restrictions on a targeted system.

Findings: The vulnerability exists because the affected software mishandles CA certificates that are related to the use of the ssl_context, ca_certs, or ca_certs_dir parameters.

Remedy: Software updates at the following link: https://github.com/urllib3/urllib3/releases

CVE-2019-0228 Apache PDFBox XML Parser XML External Entity Vulnerability – 22nd Apr 2019

Preface: We are all familiar with the .doc and .pdf formats. Because this is our choice in the business world.

Synopsis: Apache PDFBox is an open source pure-Java library that can be used to create, render, print, split, merge, alter, verify and extract text and meta-data of PDF files.

Vulnerability details: A vulnerability in Apache PDFBox could allow an unauthenticated, remote attacker to conduct an XML External Entity (XXE) attack on a targeted system. Apache PDFBox 2.0.14 does not properly initialize the XML parser, which allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a
crafted XFDF.

Remedy: Apache has released software updates at the following link: https://pdfbox.apache.org/download.cgi

RubyGems Gem Installation Arbitrary Code Execution Vulnerability – CVE-2019-8324 (Apr 2019)

Preface: In general, Ruby is a good language for game development. Apart from that Ruby has been used by companies like Twitter, Airbnb, Shopify, Github, Slideshare, Basecamp and Shopify.

Synopsis: RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a “gem”).

Vulnerability details: CVE-2019-8324: Installing a malicious gem may lead to arbitrary code execution. For more details, please refer to attached diagram.

Remedy: RubyGems has released software updates at the following link: https://rubygems.org/pages/download

Magento security consideration – SQL injection (Apr 2019)

Preface: When I was young, I am afraid for Injection therapy. Yes, is my butt. Perhaps such circumstance is also apply to software application system!

Synopsis: Magento Commerce, providing end-to-end solutions that suit clients’ needs.

Vulnerability details: A vulnerability in Magento could allow an unauthenticated, remote attacker to conduct an SQL Injection attack against a targeted system. The vulnerability is due to the insufficient validation of user supplied input submitted to the affected software. An attacker could exploit this vulnerability by sending a request that submits malicious input to the targeted system.

Remediation: https://magento.com/security/patches/magento-2.3.1-2.2.8-and-2.1.17-security-update

GNOME WebKitGTK UIProcess Subsystem Buffer Overflow Vulnerability – Apr 2019

Preface: A browser engine is a core software component of every major web browser. Apart of “browser engine”, two other terms are in common use regarding related concepts: “layout engine” and “rendering engine”

Synopsis:

A rendering engine is used by a Web browser to eender HTML pages, by mail programs that render HTML email message, as well as any other application that needs to render Web page content.
WebKitGTK is a full-featured port of the WebKit rendering engine, suitable for projects requiring any kind of web integration, from hybrid HTML/CSS applications to full-fledged web browsers.
WebKit is the web browser engine used by Safari, Mail, App Store, and many other apps on macOS, iOS, and Linux.

Vulnerability: A vulnerability in GNOME WebKitGTK could allow an unauthenticated, remote attacker to compromise a targeted system completely. The successful exploit could cause a buffer overflow condition, allowing the attacker to compromise the system completely.

Fixed Software: https://github.com/WebKit/webkit/commit/6f9b511a115311b13c06eb58038ddc2c78da5531

Remediation – Cisco IOS XR-64 Software for ASR 9000 series isolation feature vulnerability (17th Apr 2019)

Preface: One of the objective for Aggregation Services aim to provision and manage a huge number of separate physical platforms. As a result, the international vendor like Cisco also doing the transformation of the physical network devices. And therefore we seen VM devices OS system image today.

Synopsis: In order to cope with cloud computing and container environment, IOS XR 64-bit operating system (OS) is able to runs on virtualized environment with underlying 64-bit Linux kernel. As a result, the cisco product services can be extended.

Vulnerability details:
A vulnerability in the sysadmin virtual machine (VM) on Cisco ASR 9000 Series Aggregation Services Routers running Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to access internal applications running on the sysadmin VM.

Official remedy solution: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-asr9k-exr

Cisco NX-OS Software Image Signature Verification Vulnerability – Last Updated 15th Apr 2019

Preface: This advisory is part of the March 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication, which includes 25 Cisco Security Advisories that describe 26 vulnerabilities.

Synopsis: A digital signature (not digital certificate) is a mathematical technique used to validate the authenticity and integrity of a message, software or digital document.

Vulnerability details: A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. In order to manipulate the machine, threat actor must meet below conditions:

  • Has a particular product ID (PID)
  • Is running an affected BIOS version
  • Is running a vulnerable release of Cisco NX-OS Software

Official announcement : https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-sig-verif


Apache Releases Security Updates for Apache Tomcat Original release – Last revised: April 15, 2019

Preface: public class CGIServlet – extends javax.servlet.http.HttpServlet
(CGI-invoking servlet for web applications, used to execute scripts which comply to the Common Gateway Interface (CGI) specification.)

Synopsis: Tomcat implements several Java EE specifications including Java Servlet, JavaServer Pages (JSP), Java EL, and WebSocket, and provides a “pure Java” HTTP web server environment in which Java code can run.

Vulnerability details: CVE-2019-0232 Apache Tomcat Remote Code Execution on Windows

Apache Tomcat version for Windows. A design defect in function (enableCmdLineArguments), the CGI Servlet is vulnerable to Remote Code Execution due to a bug in the way the JRE passes command line arguments to Windows. But this CGI Servlet is disabled by default.
Remark: enableCmdLineArguments – Are command line parameters generated from the query string as per section 4.4 of 3875 RFC? The default is false.

Official announcement shown following url: http://mail-archives.us.apache.org/mod_mbox/www-announce/201904.mbox/%3C13d878ec-5d49-c348-48d4-25a6c81b9605%40apache.org%3E

Do you have any concerns on multiple vulnerabilities in WPA3 Protocol? (Arp 2019)

Preface: WPA3 protocol aim to enhance Wi-Fi security protection. Yes, it does. But something wrong with him this time.

Technology Synopsis: The very damaging DoS attack consists of clogging one peer with bogus requests with forged source IP addresses. Due to computationally intensive nature of modular exponentiation, the DH key exchange is highly vulnerable to clogging (DoS) attack.The SAE handshake of WPA3 also uses a cookie exchange procedure to mitigate clogging attacks.

Vulnerability highlights:

  1. The SAE handshake of WPA3 uses a cookie exchange procedure to mitigate clogging attacks.
    But the design of the cookie exchange mechanism has technical limitation. Since everyone will receive the (supposedly secret) cookies.
  2. An attacker with a rogue access point can force the client connecting to it to use WPA2’s 4-way handshake and, consequently, to get enough information to launch an offline dictionary attack.

Should you have interest, please refer to the following url: https://www.kb.cert.org/vuls/id/871675/

VMware Releases Security Updates Published Friday, April 12, 2019

Preface: A quick walk through on your VMware setup, see whether 3D acceleration feature is enabled. It is recommended to disabling the 3D-acceleration feature to protect your IT environment.

Vulnerability Details:
CVE-2019-5514 – Vulnerability due to certain unauthenticated APIs accessible through a web socket
CVE-2019-5515 – Out-of-bounds write vulnerability in the e1000 and e1000e virtual network adapters
CVE-2019-5518 – Out-of-bounds read/write vulnerability in the virtual USB 1.1 UHCI (Universal Host Controller Interface)
CVE-2019-5519 – Time-of-check Time-of-use (TOCTOU) vulnerability in the virtual USB 1.1 UHCI (Universal Host Controller Interface)
CVE-2019-5524 – Out-of-bounds write vulnerability in the e1000 virtual network adapter
CVE-2019-5516 – Vertex shader out-of-bounds read vulnerability
CVE-2019-5517 – multiple shader translator out-of-bounds read vulnerabilities
CVE-2019-5520 – out-of-bounds read vulnerability

Official announcement: https://www.vmware.com/security/advisories/VMSA-2019-0006.html

Checkpoint – Regarding to existing vulnerability reporting process, Zero day or new found vulnerabilities has grace period announce to public. Should you have doubts?
Check your managed services provider and identify how do they handling zero-day? For example: Microsoft Active Protections Program member will be know the windows zero day in advance 90 days. As such, you can using this indicator to choosen your MSS.

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