Date: Fri, 20 Oct 2023 02:10:06 +0300 From: Turistu <turistu@...il.com> To: oss-security@...ts.openwall.com Subject: Re: with firefox on X11, any page can pastejack you anytime On Tue, Oct 17, 2023 at 03:17:36AM +0300, turistu wrote: > In firefox running on X11, any script from any page can freely write to the > primary selection, and that can be easily exploited to run arbitrary code > on the user's machine. OK this was probably too technical and terse for people not familiar with X11 programming and terminology, so thing goes like this: 1. If you're a user who has first learned to use a GUI on e.g. Windows, and who is used to copy & paste with Ctrl-C Ctrl-V (or with left-click, choose Copy from the menu, and then again left-click, choose Paste), then congratulations! this DOES NOT AFFECT YOU. (Unless you're using some clipboard tools which merges the primary and clipboard selection, but I guess you don't ;-)) 2. But if you're a *native* X11 user who is used to just select the text and then paste it with a middle-click or shift-Insert, then this means you're pretty much done, and you should immediately either stop using firefox or try the workaround and patch described in my report. This also includes Wayland users. I have no idea (nor do I really care) how many of us are in 2. According to their telemetry, probably none at all. According to their prejudices, probably just a couple of insignificant trolls.
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