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[master] added isc_safe_memcmp()

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3611.	[bug]		Improved resistance to a theoretical authentication
			attack based on differential timing.  [RT #33939]
This commit is contained in:
Evan Hunt 2013-07-09 11:47:16 -07:00
parent 892506b681
commit 5b7abbef51
16 changed files with 233 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
CHANGES
View file

@ -1,3 +1,6 @@
3611. [bug] Improved resistance to a theoretical authentication
attack based on differential timing. [RT #33939]
3610. [cleanup] win32: Some executables had been omitted from the
installer. [RT #34116]

17
configure vendored
View file

@ -1344,6 +1344,7 @@ PERL
ETAGS
LN
ARFLAGS
CCNOOPT
CCOPT
STD_CWARNINGS
STD_CDEFINES
@ -11830,6 +11831,7 @@ fi
# Warn if the user specified libbind, which is now deprecated
# Check whether --enable-libbind was given.
if test "${enable_libbind+set}" = set; then :
@ -12910,6 +12912,13 @@ case "$host" in
;;
esac
#
# CCNOOPT defaults to -O0 on gcc and disables optimization when is last
#
if test "X$CCNOOPT" = "X" -a "X$GCC" = "Xyes"; then
CCNOOPT="-O0"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
$as_echo_n "checking for ANSI C header files... " >&6; }
if ${ac_cv_header_stdc+:} false; then :
@ -15625,11 +15634,13 @@ then
*-freebsd*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
;;
*-openbsd*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
;;
*-solaris*)
LIBS="$LIBS -lthread"
@ -15643,10 +15654,12 @@ then
*-dec-osf*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
;;
*-solaris*)
CC="$CC -mt"
CCOPT="$CCOPT -mt"
CCNOOPT="$CCNOOPT -mt"
;;
*-ibm-aix*)
STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
@ -15654,10 +15667,12 @@ then
*-sco-sysv*uw*|*-*-sysv*UnixWare*)
CC="$CC -Kthread"
CCOPT="$CCOPT -Kthread"
CCNOOPT="$CCNOOPT -Kthread"
;;
*-*-sysv*OpenUNIX*)
CC="$CC -Kpthread"
CCOPT="$CCOPT -Kpthread"
CCNOOPT="$CCNOOPT -Kpthread"
;;
esac
fi
@ -16197,6 +16212,7 @@ else
*-dec-osf*)
CC="$CC -std"
CCOPT="$CCOPT -std"
CCNOOPT="$CCNOOPT -std"
MKDEPCC="$CC"
;;
*-hp-hpux*)
@ -16215,6 +16231,7 @@ else
;;
esac
CCOPT="$CCOPT -Ae -z"
CCNOOPT="$CCNOOPT -Ae -z"
LDFLAGS="-Wl,+vnocompatwarnings $LDFLAGS"
MKDEPPROG='cc -Ae -E -Wp,-M >/dev/null 2>>$TMP'
;;

16
configure.in
View file

@ -50,6 +50,7 @@ AC_SUBST(STD_CINCLUDES)
AC_SUBST(STD_CDEFINES)
AC_SUBST(STD_CWARNINGS)
AC_SUBST(CCOPT)
AC_SUBST(CCNOOPT)
# Warn if the user specified libbind, which is now deprecated
AC_ARG_ENABLE(libbind, [ --enable-libbind deprecated])
@ -355,6 +356,13 @@ case "$host" in
;;
esac
#
# CCNOOPT defaults to -O0 on gcc and disables optimization when is last
#
if test "X$CCNOOPT" = "X" -a "X$GCC" = "Xyes"; then
CCNOOPT="-O0"
fi
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h regex.h sys/time.h unistd.h sys/mman.h sys/sockio.h sys/select.h sys/param.h sys/sysctl.h net/if6.h,,,
@ -1307,11 +1315,13 @@ then
*-freebsd*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
;;
*-openbsd*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
;;
*-solaris*)
LIBS="$LIBS -lthread"
@ -1325,10 +1335,12 @@ then
*-dec-osf*)
CC="$CC -pthread"
CCOPT="$CCOPT -pthread"
CCNOOPT="$CCNOOPT -pthread"
;;
*-solaris*)
CC="$CC -mt"
CCOPT="$CCOPT -mt"
CCNOOPT="$CCNOOPT -mt"
;;
*-ibm-aix*)
STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
@ -1336,10 +1348,12 @@ then
*-sco-sysv*uw*|*-*-sysv*UnixWare*)
CC="$CC -Kthread"
CCOPT="$CCOPT -Kthread"
CCNOOPT="$CCNOOPT -Kthread"
;;
*-*-sysv*OpenUNIX*)
CC="$CC -Kpthread"
CCOPT="$CCOPT -Kpthread"
CCNOOPT="$CCNOOPT -Kpthread"
;;
esac
fi
@ -1591,6 +1605,7 @@ else
*-dec-osf*)
CC="$CC -std"
CCOPT="$CCOPT -std"
CCNOOPT="$CCNOOPT -std"
MKDEPCC="$CC"
;;
*-hp-hpux*)
@ -1609,6 +1624,7 @@ else
;;
esac
CCOPT="$CCOPT -Ae -z"
CCNOOPT="$CCNOOPT -Ae -z"
LDFLAGS="-Wl,+vnocompatwarnings $LDFLAGS"
MKDEPPROG='cc -Ae -E -Wp,-M >/dev/null 2>>$TMP'
;;

13
lib/dns/hmac_link.c
View file

@ -42,6 +42,7 @@
#include <isc/md5.h>
#include <isc/sha1.h>
#include <isc/mem.h>
#include <isc/safe.h>
#include <isc/string.h>
#include <isc/util.h>
@ -138,7 +139,7 @@ hmacmd5_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA1_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA1_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);
@ -415,7 +416,7 @@ hmacsha1_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA1_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA1_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);
@ -692,7 +693,7 @@ hmacsha224_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA224_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA224_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);
@ -971,7 +972,7 @@ hmacsha256_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA256_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA256_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);
@ -1250,7 +1251,7 @@ hmacsha384_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA384_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA384_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);
@ -1529,7 +1530,7 @@ hmacsha512_compare(const dst_key_t *key1, const dst_key_t *key2) {
else if (hkey1 == NULL || hkey2 == NULL)
return (ISC_FALSE);
if (memcmp(hkey1->key, hkey2->key, ISC_SHA512_BLOCK_LENGTH) == 0)
if (isc_safe_memcmp(hkey1->key, hkey2->key, ISC_SHA512_BLOCK_LENGTH))
return (ISC_TRUE);
else
return (ISC_FALSE);

11
lib/isc/Makefile.in
View file

@ -62,7 +62,7 @@ OBJS = @ISC_EXTRA_OBJS@ \
parseint.@O@ portset.@O@ quota.@O@ radix.@O@ random.@O@ \
ratelimiter.@O@ refcount.@O@ region.@O@ regex.@O@ result.@O@ \
rwlock.@O@ \
serial.@O@ sha1.@O@ sha2.@O@ sockaddr.@O@ stats.@O@ \
safe.@O@ serial.@O@ sha1.@O@ sha2.@O@ sockaddr.@O@ stats.@O@ \
string.@O@ strtoul.@O@ symtab.@O@ task.@O@ taskpool.@O@ \
timer.@O@ version.@O@ ${UNIXOBJS} ${NLSOBJS} ${THREADOBJS}
SYMTBLOBJS = backtrace-emptytbl.@O@
@ -78,8 +78,9 @@ SRCS = @ISC_EXTRA_SRCS@ \
netaddr.c netscope.c pool.c ondestroy.c \
parseint.c portset.c quota.c radix.c random.c \
ratelimiter.c refcount.c region.c regex.c result.c rwlock.c \
serial.c sha1.c sha2.c sockaddr.c stats.c string.c strtoul.c \
symtab.c symtbl-empty.c task.c taskpool.c timer.c version.c
safe.c serial.c sha1.c sha2.c sockaddr.c stats.c string.c \
strtoul.c symtab.c symtbl-empty.c task.c taskpool.c timer.c \
version.c
LIBS = @LIBS@
@ -93,6 +94,10 @@ TESTDIRS = @UNITTESTS@
@BIND9_MAKE_RULES@
safe.@O@: safe.c
${LIBTOOL_MODE_COMPILE} ${CC} ${ALL_CFLAGS} @CCNOOPT@ \
-c ${srcdir}/safe.c
version.@O@: version.c
${LIBTOOL_MODE_COMPILE} ${CC} ${ALL_CFLAGS} \
-DVERSION=\"${VERSION}\" \

3
lib/isc/hmacmd5.c
View file

@ -28,6 +28,7 @@
#include <isc/hmacmd5.h>
#include <isc/md5.h>
#include <isc/platform.h>
#include <isc/safe.h>
#include <isc/string.h>
#include <isc/types.h>
#include <isc/util.h>
@ -145,5 +146,5 @@ isc_hmacmd5_verify2(isc_hmacmd5_t *ctx, unsigned char *digest, size_t len) {
REQUIRE(len <= ISC_MD5_DIGESTLENGTH);
isc_hmacmd5_sign(ctx, newdigest);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}

11
lib/isc/hmacsha.c
View file

@ -27,6 +27,7 @@
#include <isc/assertions.h>
#include <isc/hmacsha.h>
#include <isc/platform.h>
#include <isc/safe.h>
#include <isc/sha1.h>
#include <isc/sha2.h>
#include <isc/string.h>
@ -538,7 +539,7 @@ isc_hmacsha1_verify(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len) {
REQUIRE(len <= ISC_SHA1_DIGESTLENGTH);
isc_hmacsha1_sign(ctx, newdigest, ISC_SHA1_DIGESTLENGTH);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}
/*
@ -551,7 +552,7 @@ isc_hmacsha224_verify(isc_hmacsha224_t *ctx, unsigned char *digest, size_t len)
REQUIRE(len <= ISC_SHA224_DIGESTLENGTH);
isc_hmacsha224_sign(ctx, newdigest, ISC_SHA224_DIGESTLENGTH);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}
/*
@ -564,7 +565,7 @@ isc_hmacsha256_verify(isc_hmacsha256_t *ctx, unsigned char *digest, size_t len)
REQUIRE(len <= ISC_SHA256_DIGESTLENGTH);
isc_hmacsha256_sign(ctx, newdigest, ISC_SHA256_DIGESTLENGTH);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}
/*
@ -577,7 +578,7 @@ isc_hmacsha384_verify(isc_hmacsha384_t *ctx, unsigned char *digest, size_t len)
REQUIRE(len <= ISC_SHA384_DIGESTLENGTH);
isc_hmacsha384_sign(ctx, newdigest, ISC_SHA384_DIGESTLENGTH);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}
/*
@ -590,5 +591,5 @@ isc_hmacsha512_verify(isc_hmacsha512_t *ctx, unsigned char *digest, size_t len)
REQUIRE(len <= ISC_SHA512_DIGESTLENGTH);
isc_hmacsha512_sign(ctx, newdigest, ISC_SHA512_DIGESTLENGTH);
return (ISC_TF(memcmp(digest, newdigest, len) == 0));
return (isc_safe_memcmp(digest, newdigest, len));
}

2
lib/isc/include/isc/Makefile.in
View file

@ -37,7 +37,7 @@ HEADERS = app.h assertions.h base64.h bind9.h bitstring.h boolean.h \
namespace.h netaddr.h ondestroy.h os.h parseint.h \
print.h quota.h radix.h random.h ratelimiter.h \
refcount.h regex.h region.h resource.h \
result.h resultclass.h rwlock.h serial.h sha1.h sha2.h \
result.h resultclass.h rwlock.h safe.h serial.h sha1.h sha2.h \
sockaddr.h socket.h stdio.h stdlib.h string.h \
symtab.h \
task.h taskpool.h timer.h types.h util.h version.h \

36
lib/isc/include/isc/safe.h Normal file
View file

@ -0,0 +1,36 @@
/*
* Copyright (C) 2013 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id$ */
#ifndef ISC_SAFE_H
#define ISC_SAFE_H 1
/*! \file isc/safe.h */
#include <isc/types.h>
ISC_LANG_BEGINDECLS
isc_boolean_t
isc_safe_memcmp(const void *s1, const void *s2, size_t n);
/*%<
* Clone of libc memcmp() safe to differential timing attacks.
*/
ISC_LANG_ENDDECLS
#endif /* ISC_SAFE_H */

42
lib/isc/safe.c Normal file
View file

@ -0,0 +1,42 @@
/*
* Copyright (C) 2013 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id$ */
/*! \file */
#include <config.h>
#include <isc/safe.h>
#include <isc/util.h>
#ifdef _MSC_VER
#pragma optimize("", off)
#endif
isc_boolean_t
isc_safe_memcmp(const void *s1, const void *s2, size_t n) {
isc_uint8_t acc = 0;
if (n != 0) {
const isc_uint8_t *p1 = s1, *p2 = s2;
do {
acc |= *p1++ ^ *p2++;
} while (--n != 0);
}
return (ISC_TF(acc == 0));
}

9
lib/isc/tests/Makefile.in
View file

@ -37,13 +37,14 @@ LIBS = @LIBS@ @ATFLIBS@
OBJS = isctest.@O@
SRCS = isctest.c taskpool_test.c socket_test.c hash_test.c \
sockaddr_test.c symtab_test.c task_test.c queue_test.c \
parse_test.c pool_test.c regex_test.c socket_test.c
parse_test.c pool_test.c regex_test.c socket_test.c \
safe_test.c
SUBDIRS =
TARGETS = taskpool_test@EXEEXT@ socket_test@EXEEXT@ hash_test@EXEEXT@ \
sockaddr_test@EXEEXT@ symtab_test@EXEEXT@ task_test@EXEEXT@ \
queue_test@EXEEXT@ parse_test@EXEEXT@ pool_test@EXEEXT@ \
regex_test@EXEEXT@ socket_test@EXEEXT@
regex_test@EXEEXT@ socket_test@EXEEXT@ safe_test@EXEEXT@
@BIND9_MAKE_RULES@
@ -87,6 +88,10 @@ regex_test@EXEEXT@: regex_test.@O@ ${ISCDEPLIBS}
${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
regex_test.@O@ ${ISCLIBS} ${LIBS}
safe_test@EXEEXT@: safe_test.@O@ ${ISCDEPLIBS}
${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
safe_test.@O@ ${ISCLIBS} ${LIBS}
unit::
sh ${top_srcdir}/unit/unittest.sh

52
lib/isc/tests/safe_test.c Normal file
View file

@ -0,0 +1,52 @@
/*
* Copyright (C) 2013 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id$ */
/* ! \file */
#include <config.h>
#include <atf-c.h>
#include <stdio.h>
#include <string.h>
#include <isc/safe.h>
#include <isc/util.h>
ATF_TC(isc_safe_memcmp);
ATF_TC_HEAD(isc_safe_memcmp, tc) {
atf_tc_set_md_var(tc, "descr", "safe memcmp()");
}
ATF_TC_BODY(isc_safe_memcmp, tc) {
UNUSED(tc);
ATF_CHECK(isc_safe_memcmp("test", "test", 4));
ATF_CHECK(!isc_safe_memcmp("test", "tesc", 4));
ATF_CHECK(isc_safe_memcmp("\x00\x00\x00\x00", "\x00\x00\x00\x00", 4));
ATF_CHECK(!isc_safe_memcmp("\x00\x00\x00\x00", "\x00\x00\x00\x01", 4));
ATF_CHECK(!isc_safe_memcmp("\x00\x00\x00\x02", "\x00\x00\x00\x00", 4));
}
/*
* Main
*/
ATF_TP_ADD_TCS(tp) {
ATF_TP_ADD_TC(tp, isc_safe_memcmp);
return (atf_no_error());
}

1
lib/isc/win32/libisc.def
View file

@ -449,6 +449,7 @@ isc_rwlock_lock
isc_rwlock_trylock
isc_rwlock_tryupgrade
isc_rwlock_unlock
isc_safe_memcmp
isc_serial_eq
isc_serial_ge
isc_serial_gt

8
lib/isc/win32/libisc.dsp
View file

@ -495,6 +495,10 @@ SOURCE=..\include\isc\rwlock.h
# End Source File
# Begin Source File
SOURCE=..\include\isc\safe.h
# End Source File
# Begin Source File
SOURCE=..\include\isc\serial.h
# End Source File
# Begin Source File
@ -775,6 +779,10 @@ SOURCE=..\rwlock.c
# End Source File
# Begin Source File
SOURCE=..\safe.c
# End Source File
# Begin Source File
SOURCE=..\serial.c
# End Source File
# Begin Source File

24
lib/isc/win32/libisc.mak
View file

@ -176,6 +176,7 @@ CLEAN :
-@erase "$(INTDIR)\resource.obj"
-@erase "$(INTDIR)\result.obj"
-@erase "$(INTDIR)\rwlock.obj"
-@erase "$(INTDIR)\safe.obj"
-@erase "$(INTDIR)\serial.obj"
-@erase "$(INTDIR)\sha1.obj"
-@erase "$(INTDIR)\sha2.obj"
@ -281,6 +282,7 @@ LINK32_OBJS= \
"$(INTDIR)\refcount.obj" \
"$(INTDIR)\result.obj" \
"$(INTDIR)\rwlock.obj" \
"$(INTDIR)\safe.obj" \
"$(INTDIR)\serial.obj" \
"$(INTDIR)\sha1.obj" \
"$(INTDIR)\sha2.obj" \
@ -439,6 +441,8 @@ CLEAN :
-@erase "$(INTDIR)\result.sbr"
-@erase "$(INTDIR)\rwlock.obj"
-@erase "$(INTDIR)\rwlock.sbr"
-@erase "$(INTDIR)\safe.obj"
-@erase "$(INTDIR)\safe.sbr"
-@erase "$(INTDIR)\serial.obj"
-@erase "$(INTDIR)\serial.sbr"
-@erase "$(INTDIR)\sha1.obj"
@ -562,6 +566,7 @@ BSC32_SBRS= \
"$(INTDIR)\refcount.sbr" \
"$(INTDIR)\result.sbr" \
"$(INTDIR)\rwlock.sbr" \
"$(INTDIR)\safe.sbr" \
"$(INTDIR)\serial.sbr" \
"$(INTDIR)\sha1.sbr" \
"$(INTDIR)\sha2.sbr" \
@ -654,6 +659,7 @@ LINK32_OBJS= \
"$(INTDIR)\refcount.obj" \
"$(INTDIR)\result.obj" \
"$(INTDIR)\rwlock.obj" \
"$(INTDIR)\safe.obj" \
"$(INTDIR)\serial.obj" \
"$(INTDIR)\sha1.obj" \
"$(INTDIR)\sha2.obj" \
@ -1947,6 +1953,24 @@ SOURCE=..\rwlock.c
$(CPP) $(CPP_PROJ) $(SOURCE)
!ENDIF
SOURCE=..\safe.c
!IF "$(CFG)" == "libisc - Win32 Release"
"$(INTDIR)\safe.obj" : $(SOURCE) "$(INTDIR)"
$(CPP) $(CPP_PROJ) $(SOURCE)
!ELSEIF "$(CFG)" == "libisc - Win32 Debug"
"$(INTDIR)\safe.obj" "$(INTDIR)\safe.sbr" : $(SOURCE) "$(INTDIR)"
$(CPP) $(CPP_PROJ) $(SOURCE)
!ENDIF
SOURCE=..\serial.c

5
lib/isccc/cc.c
View file

@ -43,6 +43,7 @@
#include <isc/hmacmd5.h>
#include <isc/hmacsha.h>
#include <isc/print.h>
#include <isc/safe.h>
#include <isc/stdlib.h>
#include <isccc/alist.h>
@ -485,7 +486,7 @@ verify(isccc_sexpr_t *alist, unsigned char *data, unsigned int length,
unsigned char *value;
value = (unsigned char *) isccc_sexpr_tostring(hmac);
if (memcmp(value, digestb64, HMD5_LENGTH) != 0)
if (!isc_safe_memcmp(value, digestb64, HMD5_LENGTH))
return (ISCCC_R_BADAUTH);
} else {
unsigned char *value;
@ -494,7 +495,7 @@ verify(isccc_sexpr_t *alist, unsigned char *data, unsigned int length,
value = (unsigned char *) isccc_sexpr_tostring(hmac);
GET8(valalg, value);
if ((valalg != algorithm) ||
(memcmp(value, digestb64, HSHA_LENGTH) != 0))
(!isc_safe_memcmp(value, digestb64, HSHA_LENGTH)))
return (ISCCC_R_BADAUTH);
}