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Category Archives for "Networking"

A10 Networks ACOS Critical Insecure Cookie Vulnerability 1 of 2

The following summarizes an HTTP persistence cookie vulnerability that I identified in A10’s ACOS ADC software. This issue was disclosed to A10 Networks in June 2016 and has since been resolved.

A10 Networks Cookie Vulnerability

This vulnerability results in information disclosure about names of service-groups and IPs of real servers, as well as the ability to manipulate the content of the cookies.

SUMMARY OF VULNERABILITY

The ACOS documentation for HTTP persistence cookies notes that “For security, address information in the persistence cookies is encrypted.” However, the address information is not “encrypted”; rather, the real server IP and port information is weakly obfuscated and is easily decoded, exposing information about the internal network. The simplicity of the obfuscation also makes it trivial to manually create a cookie which ACOS would decode and honor.

Additionally, cookies configured using the service-group command option have the service-group’s full name included in the persistence cookie as plain text. This vulnerability applies to HTTP/HTTPS VIP types that have been configured to use a cookie-based persistence template.

SOFTWARE VERSIONS TESTED

This vulnerability was discovered and validated initially in ACOS 2.7.2-P4-SP2 and reconfirmed most recently in ACOS 4.1.1-P3.

VULNERABLE VERSIONS

This behavior has been core to Continue reading

IPv6 Buzz 027: Making The Leap To Enterprise IPv6

Today's IPv6 Buzz podcast discusses key approaches to getting IPv6 deployed in the enterprise. Guest Enno Rey talks about how to identify quick wins, being liberal and flexible as you deploy, and more. The IPv6 crew also talks about IPv6 security, and Enno shares highlights from his recent RIPE78 presentation.

The post IPv6 Buzz 027: Making The Leap To Enterprise IPv6 appeared first on Packet Pushers.

Growing an Internet Exchange Point in Burkina Faso

BFIX, the Burkina Faso Internet exchange point, was established as an association in Burkina on February 19, 2015 by Internet Service Providers (ISP), mobile telecommunication operators, and some public institutions such as the University of Ouagadougou and the government agency in charge of promoting information and communication technologies (“Agence de Promotion des Technologies de l’Information et de la Communication – ANPTIC”).

BFIX started exchanging the first bits of data among peers on June 26, 2015, during the 11th edition of the national “Internet Week.” BFIX’s service was officially launched on July 10, 2018 as part of the West Africa Regional Communication Infrastructure Project (WARCIP) – Burkina, among other projects.

Despite the launch and the operationalization of BFIX, a number of challenges remained, mainly attributed to the implementation of IXP best practices. In particular the network design was not optimal. Moving forward, the local community, through the voice of its executive director, Millogo Jean Baptiste, reached out to the Internet Society Africa Regional Bureau for technical assistance. A training session was planned and carried out between the 14th and 18th of January 2019 in Ouagadougou under the Internet Society and Facebook IXP Partnership project.

The one-week training had two Continue reading

Cloudflare Repositories FTW

Cloudflare Repositories FTW

This is a guest post by Jim “Elwood” O’Gorman, one of the maintainers of Kali Linux. Kali Linux is a Debian based GNU/Linux distribution popular amongst the security research communities.

Cloudflare Repositories FTW

Kali Linux turned six years old this year!

In this time, Kali has established itself as the de-facto standard open source penetration testing platform. On a quarterly basis, we release updated ISOs for multiple platforms, pre-configured virtual machines, Kali Docker, WSL, Azure, AWS images, tons of ARM devices, Kali NetHunter, and on and on and on. This has lead to Kali being trusted and relied on to always being there for both security professionals and enthusiasts alike.

But that popularity has always led to one complication: How to get Kali to people?

With so many different downloads plus the apt repository, we have to move a lot of data. To accomplish this, we have always relied on our network of first- and third-party mirrors.

The way this works is, we run a master server that pushes out to a number of mirrors. We then pay to host a number of servers that are geographically dispersed and use them as our first-party mirrors. Then, a number of third parties donate Continue reading

Remember: Don’t Panic

I hate listening to “this is what we were doing this year” podcasts as they usually turn into pointless blabbering, self-congratulations and meaningless plans (think New Year resolutions). The Full Stack Journey Episode 28 with Scott Lowe was an amazing deviation from this too-common template.

If you don’t have time to listen to the podcast (but you OUGHT TO do it) here’s what I loved most: “When faced with the onslaught of new technologies, don’t panic. Wait a few months to see which ones survive”.

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Space internet maybe end of year, says SpaceX

With SpaceX’s successful launch of an initial tranche of proposed broadband-internet-carrying satellites last week, and Amazon’s surprising posting of numerous satellite engineering-related job openings on its job board this month, one might well be asking if the next-generation internet space race is finally getting going — I first wrote about OneWeb’s  satellite internet plans it was concocting with Airbus four years ago.To read this article in full, please click here

Satellite-based internet possible by year-end, says SpaceX

With SpaceX’s successful launch of an initial array of broadband-internet-carrying satellites last week, and Amazon’s surprising posting of numerous satellite engineering-related job openings on its job board this month, one might well be asking if the next-generation internet space race is finally getting going. (I first wrote about OneWeb’s  satellite internet plans it was concocting with Airbus four years ago.)This new batch of satellite-driven internet systems, if they work and are eventually switched on, could provide broadband to most places, including previously internet-barren locations, such as rural areas. That would be good for high-bandwidth, low-latency remote-internet of things (IoT) and increasingly important edge-server connections for verticals like oil and gas and maritime. Data could even end up getting stored in compliance-friendly outer space, too. Leaky ground-based connections, also, perhaps a thing of the past.To read this article in full, please click here

Cisco security spotlights Microsoft Office 365 e-mail phishing increase

It’s no secret that if you have a cloud-based e-mail service, fighting off the barrage of security issues has become a maddening daily routine.The leading e-mail service – in Microsoft’s Office 365 package – seems to be getting the most attention from those attackers hellbent on stealing enterprise data or your private information via phishing attacks. Amazon and Google see their share of phishing attempts in their cloud-based services as well. [ Also see What to consider when deploying a next generation firewall. | Get regularly scheduled insights by signing up for Network World newsletters. ] But attackers are crafting and launching phishing campaigns targeting Office 365 users, wrote Ben Nahorney, a Threat Intelligence Analyst focused on covering the threat landscape for Cisco Security in a blog focusing on the Office 365 phishing issue.To read this article in full, please click here

Cisco security spotlights Microsoft Office 365 e-mail phishing increase

It’s no secret that if you have a cloud-based e-mail service, fighting off the barrage of security issues has become a maddening daily routine.The leading e-mail service – in Microsoft’s Office 365 package – seems to be getting the most attention from those attackers hellbent on stealing enterprise data or your private information via phishing attacks. Amazon and Google see their share of phishing attempts in their cloud-based services as well. [ Also see What to consider when deploying a next generation firewall. | Get regularly scheduled insights by signing up for Network World newsletters. ] But attackers are crafting and launching phishing campaigns targeting Office 365 users, wrote Ben Nahorney, a Threat Intelligence Analyst focused on covering the threat landscape for Cisco Security in a blog focusing on the Office 365 phishing issue.To read this article in full, please click here

NVMe on Linux

NVMe stands for “non-volatile memory express” and is a host controller interface and storage protocol that was created to accelerate the transfer of data between enterprise and client systems and solid-state drives (SSD). It works over a computer's high-speed Peripheral Component Interconnect Express (PCIe) bus. What I see when I look at this string of letters, however, is “envy me.” And the reason for the envy is significant.Using NVMe, data transfer happens much faster than it does with rotating drives. In fact, NVMe drives can move data seven times faster than SATA SSDs. That’s seven times faster than the SSDs that many of us are using today. This means that your systems could boot blindingly fast when an NVMe drive is serving as its boot drive. In fact, these days anyone buying a new system should probably not consider one that doesn’t come with NVMe built-in — whether a server or a PC.To read this article in full, please click here

Teridion’s entry in the MNS market supports enterprise wide-area networking

A few months ago, I wrote about the managed network services (MNS) market as the evolutionary direction of the network carrier. One of the companies that plays in this space is Teridion, with a service called Teridion for Enterprise. It’s a global WAN service with some unique capabilities to support performance and reliability that enterprises can really appreciate.Teridion for Enterprise is a cloud-centric solution all the way. The network is built in the cloud, and customers use commodity edge devices such as SD-WAN appliances or Cisco ISR boxes to connect. Customers request services, make changes and set policies through an easy and contemporary user interface; they pay only for the capacity they use; and all maintenance and management is completely handled by Teridion.To read this article in full, please click here

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