Date: Tue, 31 Oct 2017 14:50:05 +0100 From: Solar Designer <solar@...nwall.com> To: oss-security@...ts.openwall.com Subject: Re: Fw: Security risk of vim swap files On Tue, Oct 31, 2017 at 02:35:59PM +0100, Jakub Wilk wrote: > There's another problem with vim swapfiles. > > If you edit a file directly in /tmp, vim will happily read a swapfile > that were planted there by somebody else. Local users could exploit this > for denial of service (or maybe worse if there are any swapfile parsing > bugs...). > > Is that a bug in vim? Or is it a user error to edit file directly in > /tmp? Almost all manual uses of /tmp are user errors, yet we could want to harden programs to make such misuses less risky. > In the latter case, we should fix at least vipe(1) and vidir(1) from > moreutils; and run-mailcap(1). Alexander
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