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On Tue, Feb 9, 2021 at 6:02 PM Michael Orlitzky <mjo@g.o> wrote: |
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> On Tue, 2021-02-09 at 17:53 -0800, Fāng-ruì Sòng wrote: |
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> > (I replied via |
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> https://groups.google.com/g/linux.gentoo.dev/c/WG-OLQe3yng |
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> > "Reply all" (which only replied to the list AFAICT) but I did not |
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> > subscribe to gentoo-dev via the official |
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> > https://www.gentoo.org/get-involved/mailing-lists/ so my reply is |
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> > missing) |
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> > |
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> |
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> Apologies for hijacking your post with a tangential question, but you |
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> reminded me to ask: how did you notice this problem? Ultimately all |
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> system executables (in $PATH) should be owned by (and writable only by) |
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> root anyway; otherwise you get silly security vulnerabilities like "cat |
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> ~/virus > /usr/bin/foo" as a regular user. |
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> |
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> |
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> Root is the owner but often there is also a group that has access to the |
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files. |
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After stripping with llvm-strip, new ownership is root:root instead of |
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root:<group>. |
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Therefore, the members of the group lose access to the files post stripping. |
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|
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We found this issue in Chrome OS when we tried to switch the defaults to |
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llvm's objcopy/strip. |
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|
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Example of ebuilds: |
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$ grep -ri fowners .|grep bin|grep usr|tail -10 |
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./net-analyzer/tcpdump/tcpdump-4.9.3-r4.ebuild: fowners root:pcap |
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/usr/sbin/tcpdump |
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./net-analyzer/tcpdump/tcpdump-4.99.0.ebuild: fowners root:pcap |
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/usr/sbin/tcpdump |
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./net-analyzer/netselect/netselect-9999.ebuild: fowners root:wheel |
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/usr/bin/netselect |
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./net-analyzer/netselect/netselect-0.4-r1.ebuild: fowners root:wheel |
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/usr/bin/netselect |
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./net-analyzer/driftnet/driftnet-1.3.0.ebuild: fowners root:wheel |
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"/usr/bin/driftnet" |
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./mail-filter/procmail/procmail-3.22-r14.ebuild: fowners root:mail |
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/usr/bin/lockfile |
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./sys-block/scsiadd/scsiadd-1.97-r1.ebuild: fowners root:scsi |
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/usr/sbin/scsiadd |
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./x11-terms/aterm/aterm-1.0.1-r4.ebuild: fowners root:utmp /usr/bin/aterm |
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./x11-terms/mrxvt/mrxvt-0.5.4.ebuild: fowners root:utmp /usr/bin/mrxvt |
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./games-arcade/xboing/xboing-2.4-r3.ebuild: fowners root:gamestat |
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/var/games/xboing.score /usr/bin/xboing |
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|
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Thanks, |
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Manoj |
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