[GH-ISSUE #318] firejail is losing shell special characters in args #220

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opened 2026-05-05 05:20:54 -06:00 by gitea-mirror · 2 comments

gitea-mirror commented

2026-05-05 05:20:54 -06:00

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Originally created by @dionorgua on GitHub (Feb 23, 2016).
Original GitHub issue: https://github.com/netblue30/firejail/issues/318

Imagine that we've firefox that can be invoked like:
firefox "http://example.com/test?a=b&c=d"
Now we decided to isolate it:
firefox --join=firefox -- firefox "http://example.com/test?a=b&c=d"
This will open url without c=d parameter.

And even worse. If user puts 'firejail' wrapper
This opens a way to execute some shell commands in jail like:
"http://example.com/test?a=b&ls -la /"

Originally created by @dionorgua on GitHub (Feb 23, 2016). Original GitHub issue: https://github.com/netblue30/firejail/issues/318 Imagine that we've firefox that can be invoked like: `firefox "http://example.com/test?a=b&c=d"` Now we decided to isolate it: `firefox --join=firefox -- firefox "http://example.com/test?a=b&c=d"` This will open url without c=d parameter. And even worse. If user puts 'firejail' wrapper This opens a way to execute some shell commands in jail like: "http://example.com/test?a=b&ls -la /"

gitea-mirror

2026-05-05 05:20:54 -06:00

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gitea-mirror commented

2026-05-05 05:20:59 -06:00

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@netblue30 commented on GitHub (Feb 24, 2016):

Yes, there seem to be a problem with --join command. I'll bring a fix in. Thanks.

@netblue30 commented on GitHub (Feb 24, 2016): Yes, there seem to be a problem with --join command. I'll bring a fix in. Thanks.

gitea-mirror commented

2026-05-05 05:21:02 -06:00

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@netblue30 commented on GitHub (Jun 28, 2016):

Fixed! Give it a try and I'll reopen the bug if necessary.

@netblue30 commented on GitHub (Jun 28, 2016): Fixed! Give it a try and I'll reopen the bug if necessary.

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Reference: github-starred/firejail#220

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