oss-sec mailing list archives
Re: with firefox on X11, any page can pastejack you anytime
From: niekt0 <niekt0 () kyberia cz>
Date: Thu, 19 Oct 2023 22:35:54 +0200
Hi, On Thu, Oct 19, 2023 at 05:04:10PM +0100, Sam Bull wrote:
On Wed, 2023-10-18 at 13:25 -0500, Grant Taylor wrote:I think that this is more a problem with X11 security than it is a problem specific to Mozilla / Firefox.Also a problem with shell security. If you paste something with line breaks into bash, it executes them. If you paste the same into fish, it doesn't (it'll display the multi-line input and expect you to hit the enter key to execute it as a command).
the problem with modification of "clipboard" is unfortunately much broader, than just command execution in the shell. Imagine situation like pasting a bank account number for money transfer into internetbankig web page, and some browser tab in background silently replaces the number. Or replaces the bitcoin address, to make situation more dramatic. The direct command execution is probably the most straight-forward approach, but with bit of a creativity you can come with many various attack scenarios. While I agree that application isolation in X11 is a security problem, this bug/feature is bit of a new pokemon, it also breaks tab isolation within a browser itself, when used under X11. n.
Current thread:
- Re: with firefox on X11, any page can pastejack you anytime, (continued)
- Re: with firefox on X11, any page can pastejack you anytime Jan Engelhardt (Oct 18)
- Re: with firefox on X11, any page can pastejack you anytime Sam Bull (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Steffen Nurpmeso (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Sam Bull (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Jeremy Stanley (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Turistu (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime David Leadbeater (Oct 20)
- Re: with firefox on X11, any page can pastejack you anytime David Leadbeater (Oct 20)
- Re: with firefox on X11, any page can pastejack you anytime nightmare . yeah27 (Oct 20)
- Re: Re: with firefox on X11, any page can pastejack you anytime Steffen Nurpmeso (Oct 20)
- Re: with firefox on X11, any page can pastejack you anytime niekt0 (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Jeffrey Walton (Oct 19)
- Re: with firefox on X11, any page can pastejack you anytime Solar Designer (Oct 20)
- Re: with firefox on X11, any page can pastejack you anytime Turistu (Oct 20)
- Re: with firefox on X11, any page can pastejack you anytime Martin Hecht (Oct 24)