Netskope named a Leader in the 2024 Gartner® Magic Quadrant™ for Security Service Edge. Get the report

close
close
  • Why Netskope chevron

    Changing the way networking and security work together.

  • Our Customers chevron

    Netskope serves more than 3,000 customers worldwide including more than 25 of the Fortune 100

  • Our Partners chevron

    We partner with security leaders to help you secure your journey to the cloud.

Still Highest in Execution.
Still Furthest in Vision.

Learn why 2024 Gartner® Magic Quadrant™ named Netskope a Leader for Security Service Edge the third consecutive year.

Get the report
Netskope Named a Leader in the 2024 Gartner® Magic Quadrant™ for Security Service Edge graphic for menu
We help our customers to be Ready for Anything

See our customers
Woman smiling with glasses looking out window
Netskope’s partner-centric go-to-market strategy enables our partners to maximize their growth and profitability while transforming enterprise security.

Learn about Netskope Partners
Group of diverse young professionals smiling
Your Network of Tomorrow

Plan your path toward a faster, more secure, and more resilient network designed for the applications and users that you support.

Get the white paper
Your Network of Tomorrow
Introducing the Netskope One Platform

Netskope One is a cloud-native platform that offers converged security and networking services to enable your SASE and zero trust transformation.

Learn about Netskope One
Abstract with blue lighting
Embrace a Secure Access Service Edge (SASE) architecture

Netskope NewEdge is the world’s largest, highest-performing security private cloud and provides customers with unparalleled service coverage, performance and resilience.

Learn about NewEdge
NewEdge
Netskope Cloud Exchange

The Netskope Cloud Exchange (CE) provides customers with powerful integration tools to leverage investments across their security posture.

Learn about Cloud Exchange
Netskope video
The platform of the future is Netskope

Intelligent Security Service Edge (SSE), Cloud Access Security Broker (CASB), Cloud Firewall, Next Generation Secure Web Gateway (SWG), and Private Access for ZTNA built natively into a single solution to help every business on its journey to Secure Access Service Edge (SASE) architecture.

Go to Products Overview
Netskope video
Next Gen SASE Branch is hybrid — connected, secured, and automated

Netskope Next Gen SASE Branch converges Context-Aware SASE Fabric, Zero-Trust Hybrid Security, and SkopeAI-powered Cloud Orchestrator into a unified cloud offering, ushering in a fully modernized branch experience for the borderless enterprise.

Learn about Next Gen SASE Branch
People at the open space office
Designing a SASE Architecture For Dummies

Get your complimentary copy of the only guide to SASE design you’ll ever need.

Get the eBook
Make the move to market-leading cloud security services with minimal latency and high reliability.

Learn about NewEdge
Lighted highway through mountainside switchbacks
Safely enable the use of generative AI applications with application access control, real-time user coaching, and best-in-class data protection.

Learn how we secure generative AI use
Safely Enable ChatGPT and Generative AI
Zero trust solutions for SSE and SASE deployments

Learn about Zero Trust
Boat driving through open sea
Netskope achieves FedRAMP High Authorization

Choose Netskope GovCloud to accelerate your agency’s transformation.

Learn about Netskope GovCloud
Netskope GovCloud
  • Resources chevron

    Learn more about how Netskope can help you secure your journey to the cloud.

  • Blog chevron

    Learn how Netskope enables security and networking transformation through security service edge (SSE)

  • Events and Workshops chevron

    Stay ahead of the latest security trends and connect with your peers.

  • Security Defined chevron

    Everything you need to know in our cybersecurity encyclopedia.

Security Visionaries Podcast

On Patents, Trolls, and Innovation
In this episode host Emily Wearmouth chats with Suzanne Oliver, an intellectual property expert, and Krishna Narayanaswamy, co-founder and CTO of Netskope, about the world of patents.

Play the podcast
On Patents, Trolls, and Innovation
Latest Blogs

Read how Netskope can enable the Zero Trust and SASE journey through security service edge (SSE) capabilities.

Read the blog
Sunrise and cloudy sky
SASE Week 2023: Your SASE journey starts now!

Replay sessions from the fourth annual SASE Week.

Explore sessions
SASE Week 2023
What is Security Service Edge?

Explore the security side of SASE, the future of network and protection in the cloud.

Learn about Security Service Edge
Four-way roundabout
  • Company chevron

    We help you stay ahead of cloud, data, and network security challenges.

  • Leadership chevron

    Our leadership team is fiercely committed to doing everything it takes to make our customers successful.

  • Customer Solutions chevron

    We are here for you and with you every step of the way, ensuring your success with Netskope.

  • Training and Certification chevron

    Netskope training will help you become a cloud security expert.

Supporting sustainability through data security

Netskope is proud to participate in Vision 2045: an initiative aimed to raise awareness on private industry’s role in sustainability.

Find out more
Supporting Sustainability Through Data Security
Thinkers, builders, dreamers, innovators. Together, we deliver cutting-edge cloud security solutions to help our customers protect their data and people.

Meet our team
Group of hikers scaling a snowy mountain
Netskope’s talented and experienced Professional Services team provides a prescriptive approach to your successful implementation.

Learn about Professional Services
Netskope Professional Services
Secure your digital transformation journey and make the most of your cloud, web, and private applications with Netskope training.

Learn about Training and Certifications
Group of young professionals working

OpenSSL ChangeCipherSpec Injection Vulnerability (CVE-2014-0224)

Jun 06 2014
Tags
Cloud Best Practices
Cloud Security
Netskope Threat Research Labs
Tools and Tips
Vulnerability Advisory

OpenSSL project published a security advisory yesterday (5th June 2014) providing information on a SSL/TLS Man-In-The-Middle vulnerability. By sending a special sequence of carefully crafted SSL packets to vulnerable client and server, an attacker posing as the Man-in-the-Middle can decrypt and eavesdrop/modify the traffic between the client and the server.

SSL/TLS also called Secure Socket Layer protocol/Transport Layer Security protocol is used predominantly in the Internet to encrypt the traffic between a client and a server. For e.g. the traffic between your browser and your financial organization (such as banks etc.) is encrypted using the SSL/TLS protocols. The OpenSSL project provides an open source toolkit to implement the SSL/TLS protocol. This toolkit is very widely used on a number of servers and also clients that communicate with the servers on the internet.

The following versions of OpenSSL are affected by this vulnerability:

  • OpenSSL 1.0.1 through 1.0.1g

  • OpenSSL 1.0.0 through 1.0.0l

  • all versions before OpenSSL 0.9.8y

It is advised to upgrade to the following or any later versions:

  • OpenSSL 1.0.1h

  • OpenSSL 1.0.0m

  • OpenSSL 0.9.8za

As part of the SSL/TLS protocol, during the setup of an encrypted communication channel between the client and the server, the client and server exchange information in a particular sequence.

Some of the important items exchanged during the setup of the encrypted channel are:

  • Client and Server negotiated encryption algorithm

  • Client random number

  • Server random number

Using the above, the client computes a pre-master key and sends it to the server. Both sides use the pre-master key to generate the master key which is then used to generate a session-key. Both sides then indicate that they will subsequently use the session-key for encrypting the communication by sending a “ChangeCipherSpec” message.

In order to exploit this vulnerability, an attacker acting as the man-in-the-middle can send this “ChangeCipherSpec” message to both client and server prior to the client sending the pre-master key. This causes a vulnerable version of OpenSSL to assume that the pre-master is zero length and to go ahead with the generation of the master key and the subsequent session-keys. The attacker himself can also generate the same master key/session-keys and hence can decrypt/modify the communication between the client and the server.

An important prerequisite to launch a successful exploit against this vulnerability is to have both a vulnerable OpenSSL Client and also a vulnerable OpenSSL Server.

Typical man-in-the-middle attacks are difficult to achieve but given today’s adoption of public or rogue wifi hotspots/networks they are easy to execute. Given such scenarios it becomes important to protect ourselves against exploits taking advantage of this vulnerability.

Modern web browsers do not typically use OpenSSL. Hence, consumers using browsers to access Cloud Apps are not impacted by this vulnerability. At the same time, if native applications such as an iOS apps or Android apps are being used, it is important to ascertain from the Cloud App vendor if vulnerable version of OpenSSL is used. If vulnerable version is used, consumers should upgrade to the patched version as and when the Cloud App vendor publishes an updated app.

As a Cloud App vendor it is important to ensure that all the servers using vulnerable OpenSSL  are patched against this vulnerability.

It is also important to assess as an enterprise if any appliances such as VPN, Proxies, etc. are using vulnerable versions of OpenSSL. Please contact the respective vendors for the applicable patches/upgrades. In case of any custom clients/servers created by your enterprise, please upgrade them with the latest OpenSSL toolkits.

At Netskope, our cloud security research team is continuously monitoring the Cloud App vendor servers and will update this space with specific information.

Stay informed!

Subscribe for the latest from the Netskope Blog