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Date: Sun, 13 Jul 2014 12:39:21 +0200
From: Szabolcs Nagy <>
Cc: Isaac Dunham <>, Bob Beck <>
Subject: Re: [PATCH] implement issetugid(2)

* Brent Cook <> [2014-07-12 23:23:14 +0200]:
> Compile-time tests were ruled out because static libraries can be built against a safe libc, then linked to an app that uses an unsafe libc, causing a vulnerability.

in general a static lib cannot verify the safety of the libc
that will be used with it so while i understand the concern
i think it's futile trying to work this around in the lib

i see that issetugid is needed because there are many getenv
calls in openssl, glibc has secure_getenv for this (which
can be added to musl too i think) so that might be another
approach that works on linux

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