isa/sudo
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Use -fstack-protector-strong in preference to -fstack-protector-all

Browse Source 
or -fstack-protector.
This commit is contained in:
Todd C. Miller
2013-12-30 08:49:34 -07:00
parent cd77926e1b
commit 483e6972f6
2 changed files with 102 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
configure vendored
View File

@@ -21761,6 +21761,82 @@ fi
if test "$enable_hardening" != "no"; then if test "$enable_hardening" != "no"; then
if test -n "$GCC"; then if test -n "$GCC"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fstack-protector-strong" >&5
$as_echo_n "checking whether C compiler accepts -fstack-protector-strong... " >&6; }
if ${ax_cv_check_cflags___fstack_protector_strong+:} false; then :
$as_echo_n "(cached) " >&6
else
ax_check_save_flags=$CFLAGS
CFLAGS="$CFLAGS -fstack-protector-strong"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ax_cv_check_cflags___fstack_protector_strong=yes
else
ax_cv_check_cflags___fstack_protector_strong=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CFLAGS=$ax_check_save_flags
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fstack_protector_strong" >&5
$as_echo "$ax_cv_check_cflags___fstack_protector_strong" >&6; }
if test x"$ax_cv_check_cflags___fstack_protector_strong" = xyes; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker accepts -fstack-protector-strong" >&5
$as_echo_n "checking whether the linker accepts -fstack-protector-strong... " >&6; }
if ${ax_cv_check_ldflags___fstack_protector_strong+:} false; then :
$as_echo_n "(cached) " >&6
else
ax_check_save_flags=$LDFLAGS
LDFLAGS="$LDFLAGS -fstack-protector-strong"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ax_cv_check_ldflags___fstack_protector_strong=yes
else
ax_cv_check_ldflags___fstack_protector_strong=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LDFLAGS=$ax_check_save_flags
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_ldflags___fstack_protector_strong" >&5
$as_echo "$ax_cv_check_ldflags___fstack_protector_strong" >&6; }
if test x"$ax_cv_check_ldflags___fstack_protector_strong" = xyes; then :
SSP_CFLAGS="-fstack-protector-strong"
SSP_LDFLAGS="-Wc,-fstack-protector-strong"
else
:
fi
else
:
fi
if test -z "$SSP_CFLAGS"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fstack-protector-all" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fstack-protector-all" >&5
$as_echo_n "checking whether C compiler accepts -fstack-protector-all... " >&6; } $as_echo_n "checking whether C compiler accepts -fstack-protector-all... " >&6; }
if ${ax_cv_check_cflags___fstack_protector_all+:} false; then : if ${ax_cv_check_cflags___fstack_protector_all+:} false; then :
@@ -21914,6 +21990,7 @@ fi
fi fi
fi fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker accepts -Wl,-z,relro" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker accepts -Wl,-z,relro" >&5
$as_echo_n "checking whether the linker accepts -Wl,-z,relro... " >&6; } $as_echo_n "checking whether the linker accepts -Wl,-z,relro... " >&6; }
if ${ax_cv_check_ldflags___Wl__z_relro+:} false; then : if ${ax_cv_check_ldflags___Wl__z_relro+:} false; then :

8
configure.ac
View File

@@ -3575,6 +3575,13 @@ dnl This test relies on AC_LANG_WERROR
dnl dnl
if test "$enable_hardening" != "no"; then if test "$enable_hardening" != "no"; then
if test -n "$GCC"; then if test -n "$GCC"; then
AX_CHECK_COMPILE_FLAG([-fstack-protector-strong], [
AX_CHECK_LINK_FLAG([-fstack-protector-strong], [
SSP_CFLAGS="-fstack-protector-strong"
SSP_LDFLAGS="-Wc,-fstack-protector-strong"
])
])
if test -z "$SSP_CFLAGS"; then
AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [ AX_CHECK_COMPILE_FLAG([-fstack-protector-all], [
AX_CHECK_LINK_FLAG([-fstack-protector-all], [ AX_CHECK_LINK_FLAG([-fstack-protector-all], [
SSP_CFLAGS="-fstack-protector-all" SSP_CFLAGS="-fstack-protector-all"
@@ -3590,6 +3597,7 @@ if test "$enable_hardening" != "no"; then
]) ])
fi fi
fi fi
fi
AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="${LDFLAGS} -Wl,-z,relro"]) AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="${LDFLAGS} -Wl,-z,relro"])
fi fi