This is the mail archive of the
glibc-bugs@sourceware.org
mailing list for the glibc project.
[Bug dynamic-link/20204] _dl_open_hook and _dlfcn_hook hardening
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 18 Dec 2017 12:22:00 +0000
- Subject: [Bug dynamic-link/20204] _dl_open_hook and _dlfcn_hook hardening
- Auto-submitted: auto-generated
- References: <bug-20204-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20204
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Protect _dl_open_hook and |_dl_open_hook and
|_dlfcn_hook with pointer |_dlfcn_hook hardening
|guard |
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
We can use _rtld_global_ro to disable the hooks entirely for anything except
the static dlopen case (dlmopen uses a shared ld.so and not these hooks). This
is both simpler to implement and more reliable than pointer mangling.
--
You are receiving this mail because:
You are on the CC list for the bug.