bugGNU nano - Bugs: bug #65819, {backup} in a string bind can...


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bug #65819: {backup} in a string bind can sidestep restricted mode

Submitter:  Benno Schulenberg <bens>
Submitted:  Fri 31 May 2024 11:00:36 AM UTC
Severity:  3 - Normal Status:  Fixed
Assigned to:  bens Open/Closed:  Closed

Sat 01 Jun 2024 09:38:36 AM UTC, comment #1: 

Fixed in git, commit 68974884, by conditionalizing the toggling of the Backup flag (and the Append and Prepend flags, and the Browser function) on not being in restricted mode.

Benno Schulenberg <bens>
Group administrator
Fri 31 May 2024 11:00:36 AM UTC, original submission:  

To reproduce, do:

rm -v README~

echo 'bind ^P "{backup}" writeout' >sneakrc

src/nano --rc=sneakrc --restrict  README

Then type: ^O ^P
See that "[Backup]" has been activated, even though this should not be possible in restricted mode.

Now type: <Enter> ^X
Followed by: ls -l README*
See that a README~ backup file was written.

Benno Schulenberg <bens>
Group administrator


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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2024-07-13 bens Open/ClosedOpen Closed
    2024-06-01 bens StatusNone Fixed

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