Date: Wed, 18 May 2011 20:29:33 +0000 From: maximilian attems <max@...o.at> To: Dan Rosenberg <dan.j.rosenberg@...il.com> Cc: oss-security@...ts.openwall.com, klibc@...or.com Subject: Re: [klibc] CVE request: klibc: ipconfig sh script with unescaped DHCP options On Wed, May 18, 2011 at 04:13:05PM -0400, Dan Rosenberg wrote: > Might it be worth fixing the insecure temporary file usage? > > 122 snprintf(fn, sizeof(fn), "/tmp/net-%s.conf", dev->name); > 123 f = fopen(fn, "w"); > > What if someone else has already created that file, or put a symlink > or hard link there? for the initramfs case I don't see how. outside of initramfs usage I'd agree that this needs fixing. > What if someone overwrites your string with > command injection characters despite your stripping? please be more verbose, what example do you have in mind? thank you for the review. -- maks
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