A Primer to the OAuth Protocol
The shared secret used to verify the request signature is called the Consumer Secret. Because it is vital to the integrity of this transaction, it is imperative that this piece of data be kept secret. In the case of a Web-based Consumer, such as a Web service, it is easy to keep the Consumer Secret safe. If the Consumer is a client-side application, the Consumer Secret must be hard-coded in each copy of the application. This means the Consumer Secret potentially is discoverable, which compromises the integrity of any desktop application.
There is a known session fixation attack vulnerability found in the OAuth 1.0 protocol that allows an attacker to gain access to a target's account. The attacker logs in to the Consumer site and initiates the OAuth authorization process. The attacker saves the authorization request page instead of clicking submit. This stores the request token and secret. The attacker sends a link to a victim, which, if clicked, will continue the authorization process as started by the attacker. Once completed, the attacker will have access to the victim's protected resources via the Consumer used.
Adrian Hannah is a lifelong system administrator, trying to find a nice place to finally settle down. He is currently working for the federal government in Indiana.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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