Surprising shell pathname expansion

computer unix shell

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.

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More example of argument and shell command injections in browser invocation

computer unix debian security shell

In the previous episode, I talked about some argument and shell command injections vulnerabilities through URIs passed to browsers. Here I'm checkig some other CVEs which were registered at the same time.

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Argument and shell command injections in browser invocation

computer unix debian security shell

While reading the source of sensible-browser in order to understand how it was choosing which browser to call (and how I could tweak this choice), I found an argument injection vulnerability when handling the BROWSER environment variable. This lead me (and others) to a a few other argument and shell command injection vulnerabilities in BROWSER processing and browser invocation in general.

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