diff options
author | Eike Rathke <erack@redhat.com> | 2017-04-20 22:06:23 +0200 |
---|---|---|
committer | Andras Timar <andras.timar@collabora.com> | 2017-04-24 19:23:05 +0200 |
commit | f513276df9465f232038390981547f9cbc113a02 (patch) | |
tree | 3f2cfd5f0bcbc4d0955ad0870cbf919a6e5cd0fe /external/icu | |
parent | ofz#1193 we only set these values, never read them (diff) | |
download | core-f513276df9465f232038390981547f9cbc113a02.tar.gz core-f513276df9465f232038390981547f9cbc113a02.zip |
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@redhat.com>
Tested-by: Jenkins <ci@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/36774
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>
(cherry picked from commit 3e227df8c645ee12b7852ab320c3041875d275ac)
Diffstat (limited to 'external/icu')
-rw-r--r-- | external/icu/UnpackedTarball_icu.mk | 1 | ||||
-rw-r--r-- | external/icu/icu4c-changeset-39671.patch.1 | 189 |
2 files changed, 190 insertions, 0 deletions
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. |