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On Tue, 17 Oct 2006 11:25:13 -0400, Alejo Sanchez |
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<alejos-Re5JQEeQqe8AvxtiuMwx3w@××××××××××××.org> wrote: |
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> On 10/17/06, Javier Barrio |
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> <coder-EYqyydz9ICHYtjvyW6yDsg@××××××××××××.org> wrote: |
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>> |
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>> > Now to the question. I was wondering if there is a way to protect GOT |
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>> > (besides having ET_DYN) in the way OpenBSD does |
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>> > (http://undeadly.org/cgi?action=article&sid=20030126143902). If not, |
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>> > what would you think on a similar patch for Hardened? |
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>> |
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>> Mmm, I think that can be (partially) protected passing -z relro to the |
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>> gnu linker, making RELRO segment read-only after symbol resolution. |
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>> |
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> |
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> Thanks!Tried googling but didn't get there. Should've tried harder, |
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> perhaps. |
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> http://www.gentoo.org/proj/en/hardened/hardened-toolchain.xml#doc_chap4 |
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> |
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> Cheers. |
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> |
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> Alejo |
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1. The reference seems to be a discussion of possibilities that were not |
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implemented? Is this history, or an ongoing debate? |
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2. So does this mean that in anticipation of new binutils, we should add |
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LDFLAGS="-Wl,z,norelro" to make.conf? |
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For that matter, should we add "-z norelro" to CFLAGS and/orCXXFLAGS now? |
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TIA, newbie |
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-- |
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