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Re: Bash not escaping escape sequences in directory names


From: Chet Ramey
Subject: Re: Bash not escaping escape sequences in directory names
Date: Sat, 22 Jan 2022 13:28:50 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.4.1

On 1/22/22 5:52 AM, Andreas Kusalananda Kähäri wrote:
On Fri, Jan 21, 2022 at 06:33:02PM -0500, Chet Ramey wrote:
On 1/21/22 6:13 PM, Mike Jonkmans wrote:
On Fri, Jan 21, 2022 at 03:29:47PM -0500, Chet Ramey wrote:
On 1/21/22 1:43 AM, Lawrence Velázquez wrote:

Personally, I would be
less than pleased if my whole terminal turned red just because I
changed into a directory that happened to have a weird name.

A mild annoyance at best, don't you think?

Mostly an annoyance, but it has potential to be a security issue.

Highly unlikely. It would require an implausible scenario.

Mind if I use that quote? :-)

Example of interesting values to test in PS1, with discussions:

        https://security.stackexchange.com/q/56307

They're all about security issues in terminal emulators, or cat, not bash.
They don't require bash at all.

I will look at doing something here to improve the situation, but I'll push
back on the notion that this is a security issue with bash.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/



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