[Libreoffice-commits] core.git: Branch 'libreoffice-5-3-3' - external/icu
Eike Rathke
erack at redhat.com
Tue May 2 16:00:03 UTC 2017
external/icu/UnpackedTarball_icu.mk | 1
external/icu/icu4c-changeset-39671.patch.1 | 189 +++++++++++++++++++++++++++++
2 files changed, 190 insertions(+)
New commits:
commit c9deb223767647b6a317a76f1ea676e7f514b723
Author: Eike Rathke <erack at redhat.com>
Date: Thu Apr 20 22:06:23 2017 +0200
add ICU changeset-39671 fix for CVE-2017-7867 CVE-2017-7868
http://bugs.icu-project.org/trac/changeset/39671
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=213
https://bugzilla.redhat.com/show_bug.cgi?id=1444101
Reviewed-on: https://gerrit.libreoffice.org/36754
Reviewed-by: Eike Rathke <erack at redhat.com>
Tested-by: Jenkins <ci at libreoffice.org>
(cherry picked from commit c7de8233d15ed0c90fef6c49a54d60cf10119f58)
Backported to older MSVC using the UGLY_SIZEOF_MAPTOUCHARS macro instead
of sizeof(UTF8Buf::mapToUChars).
Change-Id: I4e776ad4fe63c77057b0c823f8672a2b6703346f
Reviewed-on: https://gerrit.libreoffice.org/36775
Reviewed-by: Michael Stahl <mstahl at redhat.com>
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice at googlemail.com>
Tested-by: Christian Lohmaier <lohmaier+LibreOffice at googlemail.com>
diff --git a/external/icu/UnpackedTarball_icu.mk b/external/icu/UnpackedTarball_icu.mk
index 0e4a6455a0a3..58fedc9f3951 100644
--- a/external/icu/UnpackedTarball_icu.mk
+++ b/external/icu/UnpackedTarball_icu.mk
@@ -27,6 +27,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,icu,\
$(if $(filter-out ANDROID,$(OS)),external/icu/icu4c-icudata-stdlibs.diff) \
$(if $(filter EMSCRIPTEN,$(OS)),external/icu/icu4c-emscripten.patch.1) \
external/icu/khmerbreakengine.patch \
+ external/icu/icu4c-changeset-39671.patch.1 \
))
$(eval $(call gb_UnpackedTarball_add_file,icu,source/data/brkitr/khmerdict.dict,external/icu/khmerdict.dict))
diff --git a/external/icu/icu4c-changeset-39671.patch.1 b/external/icu/icu4c-changeset-39671.patch.1
new file mode 100644
index 000000000000..b8ac1385364e
--- /dev/null
+++ b/external/icu/icu4c-changeset-39671.patch.1
@@ -0,0 +1,189 @@
+diff -ur icu.org/source/common/utext.cpp icu/source/common/utext.cpp
+--- icu.org/source/common/utext.cpp 2016-06-15 20:58:17.000000000 +0200
++++ icu/source/common/utext.cpp 2017-04-21 16:38:15.993398034 +0200
+@@ -847,9 +847,15 @@
+ //------------------------------------------------------------------------------
+
+ // Chunk size.
+-// Must be less than 85, because of byte mapping from UChar indexes to native indexes.
+-// Worst case is three native bytes to one UChar. (Supplemenaries are 4 native bytes
+-// to two UChars.)
++// Must be less than 42 (256/6), because of byte mapping from UChar indexes to native indexes.
++// Worst case there are six UTF-8 bytes per UChar.
++// obsolete 6 byte form fd + 5 trails maps to fffd
++// obsolete 5 byte form fc + 4 trails maps to fffd
++// non-shortest 4 byte forms maps to fffd
++// normal supplementaries map to a pair of utf-16, two utf8 bytes per utf-16 unit
++// mapToUChars array size must allow for the worst case, 6.
++// This could be brought down to 4, by treating fd and fc as pure illegal,
++// rather than obsolete lead bytes. But that is not compatible with the utf-8 access macros.
+ //
+ enum { UTF8_TEXT_CHUNK_SIZE=32 };
+
+@@ -867,6 +873,15 @@
+ // pair. Doing this is simpler than checking for the edge case.
+ //
+
++// erAck: older MSVC used on libreoffice-5-3 and 5-2 bails out with
++// error C2070: 'unknown': illegal sizeof operand
++// for sizeof(UTF8Buf::mapToUChars)
++// so have an ugly workaround:
++// First define a macro of the original size expression, so a follow-up patch
++// on the original code would fail..
++#define UGLY_MAPTOUCHARS_SIZE (UTF8_TEXT_CHUNK_SIZE*6+6)
++#define UGLY_SIZEOF_MAPTOUCHARS (sizeof(uint8_t)*(UGLY_MAPTOUCHARS_SIZE))
++
+ struct UTF8Buf {
+ int32_t bufNativeStart; // Native index of first char in UChar buf
+ int32_t bufNativeLimit; // Native index following last char in buf.
+@@ -889,7 +904,7 @@
+ // Requires two extra slots,
+ // one for a supplementary starting in the last normal position,
+ // and one for an entry for the buffer limit position.
+- uint8_t mapToUChars[UTF8_TEXT_CHUNK_SIZE*3+6]; // Map native offset from bufNativeStart to
++ uint8_t mapToUChars[UGLY_MAPTOUCHARS_SIZE]; // Map native offset from bufNativeStart to
+ // correspoding offset in filled part of buf.
+ int32_t align;
+ };
+@@ -1032,6 +1047,7 @@
+ // Requested index is in this buffer.
+ u8b = (UTF8Buf *)ut->p; // the current buffer
+ mapIndex = ix - u8b->toUCharsMapStart;
++ U_ASSERT(mapIndex < (int32_t)UGLY_SIZEOF_MAPTOUCHARS);
+ ut->chunkOffset = u8b->mapToUChars[mapIndex] - u8b->bufStartIdx;
+ return TRUE;
+
+@@ -1298,6 +1314,10 @@
+ // Can only do this if the incoming index is somewhere in the interior of the string.
+ // If index is at the end, there is no character there to look at.
+ if (ix != ut->b) {
++ // Note: this function will only move the index back if it is on a trail byte
++ // and there is a preceding lead byte and the sequence from the lead
++ // through this trail could be part of a valid UTF-8 sequence
++ // Otherwise the index remains unchanged.
+ U8_SET_CP_START(s8, 0, ix);
+ }
+
+@@ -1311,7 +1331,10 @@
+ UChar *buf = u8b->buf;
+ uint8_t *mapToNative = u8b->mapToNative;
+ uint8_t *mapToUChars = u8b->mapToUChars;
+- int32_t toUCharsMapStart = ix - (UTF8_TEXT_CHUNK_SIZE*3 + 1);
++ int32_t toUCharsMapStart = ix - UGLY_SIZEOF_MAPTOUCHARS + 1;
++ // Note that toUCharsMapStart can be negative. Happens when the remaining
++ // text from current position to the beginning is less than the buffer size.
++ // + 1 because mapToUChars must have a slot at the end for the bufNativeLimit entry.
+ int32_t destIx = UTF8_TEXT_CHUNK_SIZE+2; // Start in the overflow region
+ // at end of buffer to leave room
+ // for a surrogate pair at the
+@@ -1338,6 +1361,7 @@
+ if (c<0x80) {
+ // Special case ASCII range for speed.
+ buf[destIx] = (UChar)c;
++ U_ASSERT(toUCharsMapStart <= srcIx);
+ mapToUChars[srcIx - toUCharsMapStart] = (uint8_t)destIx;
+ mapToNative[destIx] = (uint8_t)(srcIx - toUCharsMapStart);
+ } else {
+@@ -1367,6 +1391,7 @@
+ do {
+ mapToUChars[sIx-- - toUCharsMapStart] = (uint8_t)destIx;
+ } while (sIx >= srcIx);
++ U_ASSERT(toUCharsMapStart <= (srcIx+1));
+
+ // Set native indexing limit to be the current position.
+ // We are processing a non-ascii, non-native-indexing char now;
+@@ -1541,6 +1566,7 @@
+ U_ASSERT(index>=ut->chunkNativeStart+ut->nativeIndexingLimit);
+ U_ASSERT(index<=ut->chunkNativeLimit);
+ int32_t mapIndex = index - u8b->toUCharsMapStart;
++ U_ASSERT(mapIndex < (int32_t)UGLY_SIZEOF_MAPTOUCHARS);
+ int32_t offset = u8b->mapToUChars[mapIndex] - u8b->bufStartIdx;
+ U_ASSERT(offset>=0 && offset<=ut->chunkLength);
+ return offset;
+diff -ur icu.org/source/test/intltest/utxttest.cpp icu/source/test/intltest/utxttest.cpp
+--- icu.org/source/test/intltest/utxttest.cpp 2016-06-15 20:58:17.000000000 +0200
++++ icu/source/test/intltest/utxttest.cpp 2017-04-21 16:14:57.383814739 +0200
+@@ -67,6 +67,8 @@
+ if (exec) Ticket10983(); break;
+ case 7: name = "Ticket12130";
+ if (exec) Ticket12130(); break;
++ case 8: name = "Ticket12888";
++ if (exec) Ticket12888(); break;
+ default: name = ""; break;
+ }
+ }
+@@ -1583,3 +1585,63 @@
+ }
+ utext_close(&ut);
+ }
++
++// Ticket 12888: bad handling of illegal utf-8 containing many instances of the archaic, now illegal,
++// six byte utf-8 forms. Original implementation had an assumption that
++// there would be at most three utf-8 bytes per UTF-16 code unit.
++// The five and six byte sequences map to a single replacement character.
++
++void UTextTest::Ticket12888() {
++ const char *badString =
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80"
++ "\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80\xfd\x80\x80\x80\x80\x80";
++
++ UErrorCode status = U_ZERO_ERROR;
++ LocalUTextPointer ut(utext_openUTF8(NULL, badString, -1, &status));
++ TEST_SUCCESS(status);
++ for (;;) {
++ UChar32 c = utext_next32(ut.getAlias());
++ if (c == U_SENTINEL) {
++ break;
++ }
++ }
++ int32_t endIdx = utext_getNativeIndex(ut.getAlias());
++ if (endIdx != (int32_t)strlen(badString)) {
++ errln("%s:%d expected=%d, actual=%d", __FILE__, __LINE__, strlen(badString), endIdx);
++ return;
++ }
++
++ for (int32_t prevIndex = endIdx; prevIndex>0;) {
++ UChar32 c = utext_previous32(ut.getAlias());
++ int32_t currentIndex = utext_getNativeIndex(ut.getAlias());
++ if (c != 0xfffd) {
++ errln("%s:%d (expected, actual, index) = (%d, %d, %d)\n",
++ __FILE__, __LINE__, 0xfffd, c, currentIndex);
++ break;
++ }
++ if (currentIndex != prevIndex - 6) {
++ errln("%s:%d: wrong index. Expected, actual = %d, %d",
++ __FILE__, __LINE__, prevIndex - 6, currentIndex);
++ break;
++ }
++ prevIndex = currentIndex;
++ }
++}
+diff -ur icu.org/source/test/intltest/utxttest.h icu/source/test/intltest/utxttest.h
+--- icu.org/source/test/intltest/utxttest.h 2016-06-15 20:58:17.000000000 +0200
++++ icu/source/test/intltest/utxttest.h 2017-04-21 16:14:57.383814739 +0200
+@@ -38,6 +38,7 @@
+ void Ticket10562();
+ void Ticket10983();
+ void Ticket12130();
++ void Ticket12888();
+
+ private:
+ struct m { // Map between native indices & code points.
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