Surprising shell pathname expansion
Published:
I thought I was understanding pretty well how bash argument processing and various expansions is supposed to behave. Apparently, there are still subtleties which tricks me, sometimes.
Remote code execution via cross site request forgery in InternetCube and YunoHost
Published:
How I found remote code execution vulnerabilities via Cross Site Request Forgery (CSRF) on the administration interfaces of InternetCube applications and of the YunoHost administration interface which could have been used to execute arbitrary code as root. These vulnerabilities were fixed in YunoHost 3.3, OpenVPN Client app 1.3.0. and YunoHost 3.4.
My document generation workflow with Markdown, YAML, Jinja2 and WeasyPrint
Published:
Here is the workflow I am using to generate simple text documents (resume, cover letters, etc.) from Markdown, YAML and Jinja2 templates.
IP address spoofing in order to watch South Park
Published:
Trying to bring back some old IP spoofing Firefox extension for watching South Park episodes.
More example of argument and shell command injections in browser invocation
Published:
In the previous episode, I talked about some argument and shell command injections vulnerabilities through URIs passed to browsers. Here I am evaluating some other CVEs which were registered at the same time (not by me).
Argument and shell command injections in browser invocation
Published:
I found an argument injection vulnerability related to the handling of the BROWSER environment variable in sensible-browser. This lead me (and others) to a few other arguments and shell command injection vulnerabilities in BROWSER processing and browser invocation in general.
Sibling tail call optimization in Python
Published:
In Tail Recursion In Python, Chris Penner implements (self) tail-call optimization (TCO) in Python using a function decorator. Here I am extending the approach for sibling calls.
Foo over SSH
Using SSH as a transport for your protocol
Published:
A comparison of the different solutions for using SSH2 as a secured transport for protocols/services/applications.
Terminal read-only live sharing
Published:
Live sharing a terminal session to another (shared) host over SSH in read-only mode.
OpenSSH ProxyUseFdPass
Published:
While looking at the OpenSSH ssh_config manpage, I found the ProxyUseFdpass configuration I did not know about. It is apparently not widely known or used.
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