diff --git a/SOURCES/libtiff-CVE-2019-14973.patch b/SOURCES/libtiff-CVE-2019-14973.patch new file mode 100644 index 0000000..f98ea1e --- /dev/null +++ b/SOURCES/libtiff-CVE-2019-14973.patch @@ -0,0 +1,424 @@ +From 218c3753fba788c78a9b5e515e884043f6e2ba28 Mon Sep 17 00:00:00 2001 +From: Even Rouault +Date: Sat, 10 Aug 2019 18:25:03 +0200 +Subject: [PATCH] Fix integer overflow in _TIFFCheckMalloc() and other + implementation-defined behaviour (CVE-2019-14973) + +_TIFFCheckMalloc()/_TIFFCheckRealloc() used a unsafe way to detect overflow +in the multiplication of nmemb and elem_size (which are of type tmsize_t, thus +signed), which was especially easily triggered on 32-bit builds (with recent +enough compilers that assume that signed multiplication cannot overflow, since +this is undefined behaviour by the C standard). The original issue which lead to +this fix was trigged from tif_fax3.c + +There were also unsafe (implementation defied), and broken in practice on 64bit +builds, ways of checking that a uint64 fits of a (signed) tmsize_t by doing +(uint64)(tmsize_t)uint64_var != uint64_var comparisons. Those have no known +at that time exploits, but are better to fix in a more bullet-proof way. +Or similarly use of (int64)uint64_var <= 0. +--- + libtiff/tif_aux.c | 49 +++++++++++++++++++++++++++++++++++++----- + libtiff/tif_getimage.c | 6 ++---- + libtiff/tif_luv.c | 8 +------ + libtiff/tif_pixarlog.c | 7 +----- + libtiff/tif_read.c | 38 +++++++++----------------------- + libtiff/tif_strip.c | 35 ++++-------------------------- + libtiff/tif_tile.c | 27 +++-------------------- + libtiff/tiffiop.h | 7 +++++- + 8 files changed, 71 insertions(+), 106 deletions(-) + +diff --git a/libtiff/tif_aux.c b/libtiff/tif_aux.c +index 10b8d00..38a98b6 100644 +--- a/libtiff/tif_aux.c ++++ b/libtiff/tif_aux.c +@@ -59,18 +59,57 @@ _TIFFMultiply64(TIFF* tif, uint64 first, uint64 second, const char* where) + return bytes; + } + ++tmsize_t ++_TIFFMultiplySSize(TIFF* tif, tmsize_t first, tmsize_t second, const char* where) ++{ ++ if( first <= 0 || second <= 0 ) ++ { ++ if( tif != NULL && where != NULL ) ++ { ++ TIFFErrorExt(tif->tif_clientdata, where, ++ "Invalid argument to _TIFFMultiplySSize() in %s", where); ++ } ++ return 0; ++ } ++ ++ if( first > TIFF_TMSIZE_T_MAX / second ) ++ { ++ if( tif != NULL && where != NULL ) ++ { ++ TIFFErrorExt(tif->tif_clientdata, where, ++ "Integer overflow in %s", where); ++ } ++ return 0; ++ } ++ return first * second; ++} ++ ++tmsize_t _TIFFCastUInt64ToSSize(TIFF* tif, uint64 val, const char* module) ++{ ++ if( val > (uint64)TIFF_TMSIZE_T_MAX ) ++ { ++ if( tif != NULL && module != NULL ) ++ { ++ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); ++ } ++ return 0; ++ } ++ return (tmsize_t)val; ++} ++ + void* + _TIFFCheckRealloc(TIFF* tif, void* buffer, + tmsize_t nmemb, tmsize_t elem_size, const char* what) + { + void* cp = NULL; +- tmsize_t bytes = nmemb * elem_size; +- ++ tmsize_t count = _TIFFMultiplySSize(tif, nmemb, elem_size, NULL); + /* +- * XXX: Check for integer overflow. ++ * Check for integer overflow. + */ +- if (nmemb && elem_size && bytes / elem_size == nmemb) +- cp = _TIFFrealloc(buffer, bytes); ++ if (count != 0) ++ { ++ cp = _TIFFrealloc(buffer, count); ++ } + + if (cp == NULL) { + TIFFErrorExt(tif->tif_clientdata, tif->tif_name, +diff --git a/libtiff/tif_getimage.c b/libtiff/tif_getimage.c +index fc554cc..ec09fea 100644 +--- a/libtiff/tif_getimage.c ++++ b/libtiff/tif_getimage.c +@@ -757,9 +757,8 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + uint32 leftmost_tw; + + tilesize = TIFFTileSize(tif); +- bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,tilesize); ++ bufsize = _TIFFMultiplySSize(tif, alpha?4:3,tilesize, "gtTileSeparate"); + if (bufsize == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate"); + return (0); + } + +@@ -1021,9 +1020,8 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h) + uint16 colorchannels; + + stripsize = TIFFStripSize(tif); +- bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,stripsize); ++ bufsize = _TIFFMultiplySSize(tif,alpha?4:3,stripsize, "gtStripSeparate"); + if (bufsize == 0) { +- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate"); + return (0); + } + +diff --git a/libtiff/tif_luv.c b/libtiff/tif_luv.c +index 4b25244..c4cb73a 100644 +--- a/libtiff/tif_luv.c ++++ b/libtiff/tif_luv.c +@@ -1264,16 +1264,10 @@ LogL16GuessDataFmt(TIFFDirectory *td) + return (SGILOGDATAFMT_UNKNOWN); + } + +- +-#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0)) +-#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1) +- + static tmsize_t + multiply_ms(tmsize_t m1, tmsize_t m2) + { +- if( m1 == 0 || m2 > TIFF_TMSIZE_T_MAX / m1 ) +- return 0; +- return m1 * m2; ++ return _TIFFMultiplySSize(NULL, m1, m2, NULL); + } + + static int +diff --git a/libtiff/tif_pixarlog.c b/libtiff/tif_pixarlog.c +index 979858d..8e9eaa1 100644 +--- a/libtiff/tif_pixarlog.c ++++ b/libtiff/tif_pixarlog.c +@@ -636,15 +636,10 @@ PixarLogGuessDataFmt(TIFFDirectory *td) + return guess; + } + +-#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0)) +-#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1) +- + static tmsize_t + multiply_ms(tmsize_t m1, tmsize_t m2) + { +- if( m1 == 0 || m2 > TIFF_TMSIZE_T_MAX / m1 ) +- return 0; +- return m1 * m2; ++ return _TIFFMultiplySSize(NULL, m1, m2, NULL); + } + + static tmsize_t +diff --git a/libtiff/tif_read.c b/libtiff/tif_read.c +index 04100f4..9a0e6e9 100644 +--- a/libtiff/tif_read.c ++++ b/libtiff/tif_read.c +@@ -31,9 +31,6 @@ + #include "tiffiop.h" + #include + +-#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0)) +-#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1) +- + int TIFFFillStrip(TIFF* tif, uint32 strip); + int TIFFFillTile(TIFF* tif, uint32 tile); + static int TIFFStartStrip(TIFF* tif, uint32 strip); +@@ -51,6 +48,8 @@ TIFFReadRawTile1(TIFF* tif, uint32 tile, void* buf, tmsize_t size, const char* m + #define THRESHOLD_MULTIPLIER 10 + #define MAX_THRESHOLD (THRESHOLD_MULTIPLIER * THRESHOLD_MULTIPLIER * THRESHOLD_MULTIPLIER * INITIAL_THRESHOLD) + ++#define TIFF_INT64_MAX ((((int64)0x7FFFFFFF) << 32) | 0xFFFFFFFF) ++ + /* Read 'size' bytes in tif_rawdata buffer starting at offset 'rawdata_offset' + * Returns 1 in case of success, 0 otherwise. */ + static int TIFFReadAndRealloc( TIFF* tif, tmsize_t size, +@@ -735,23 +734,8 @@ TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size) + return ((tmsize_t)(-1)); + } + bytecount = td->td_stripbytecount[strip]; +- if ((int64)bytecount <= 0) { +-#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) +- TIFFErrorExt(tif->tif_clientdata, module, +- "%I64u: Invalid strip byte count, strip %lu", +- (unsigned __int64) bytecount, +- (unsigned long) strip); +-#else +- TIFFErrorExt(tif->tif_clientdata, module, +- "%llu: Invalid strip byte count, strip %lu", +- (unsigned long long) bytecount, +- (unsigned long) strip); +-#endif +- return ((tmsize_t)(-1)); +- } +- bytecountm = (tmsize_t)bytecount; +- if ((uint64)bytecountm!=bytecount) { +- TIFFErrorExt(tif->tif_clientdata, module, "Integer overflow"); ++ bytecountm = _TIFFCastUInt64ToSSize(tif, bytecount, module); ++ if (bytecountm == 0) { + return ((tmsize_t)(-1)); + } + if (size != (tmsize_t)(-1) && size < bytecountm) +@@ -775,7 +759,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip) + if ((tif->tif_flags&TIFF_NOREADRAW)==0) + { + uint64 bytecount = td->td_stripbytecount[strip]; +- if ((int64)bytecount <= 0) { ++ if( bytecount == 0 || bytecount > (uint64)TIFF_INT64_MAX ) { + #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) + TIFFErrorExt(tif->tif_clientdata, module, + "Invalid strip byte count %I64u, strip %lu", +@@ -802,7 +786,7 @@ TIFFFillStrip(TIFF* tif, uint32 strip) + (bytecount - 4096) / 10 > (uint64)stripsize ) + { + uint64 newbytecount = (uint64)stripsize * 10 + 4096; +- if( (int64)newbytecount >= 0 ) ++ if( newbytecount == 0 || newbytecount > (uint64)TIFF_INT64_MAX ) + { + #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) + TIFFWarningExt(tif->tif_clientdata, module, +@@ -1197,10 +1181,8 @@ TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size) + bytecount64 = td->td_stripbytecount[tile]; + if (size != (tmsize_t)(-1) && (uint64)size < bytecount64) + bytecount64 = (uint64)size; +- bytecountm = (tmsize_t)bytecount64; +- if ((uint64)bytecountm!=bytecount64) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); ++ bytecountm = _TIFFCastUInt64ToSSize(tif, bytecount64, module); ++ if( bytecountm == 0 ) { + return ((tmsize_t)(-1)); + } + return (TIFFReadRawTile1(tif, tile, buf, bytecountm, module)); +@@ -1222,7 +1204,7 @@ TIFFFillTile(TIFF* tif, uint32 tile) + if ((tif->tif_flags&TIFF_NOREADRAW)==0) + { + uint64 bytecount = td->td_stripbytecount[tile]; +- if ((int64)bytecount <= 0) { ++ if( bytecount == 0 || bytecount > (uint64)TIFF_INT64_MAX ) { + #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) + TIFFErrorExt(tif->tif_clientdata, module, + "%I64u: Invalid tile byte count, tile %lu", +@@ -1249,7 +1231,7 @@ TIFFFillTile(TIFF* tif, uint32 tile) + (bytecount - 4096) / 10 > (uint64)stripsize ) + { + uint64 newbytecount = (uint64)stripsize * 10 + 4096; +- if( (int64)newbytecount >= 0 ) ++ if( newbytecount == 0 || newbytecount > (uint64)TIFF_INT64_MAX ) + { + #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) + TIFFWarningExt(tif->tif_clientdata, module, +diff --git a/libtiff/tif_strip.c b/libtiff/tif_strip.c +index 6e9f2ef..321ad6b 100644 +--- a/libtiff/tif_strip.c ++++ b/libtiff/tif_strip.c +@@ -131,15 +131,8 @@ TIFFVStripSize(TIFF* tif, uint32 nrows) + { + static const char module[] = "TIFFVStripSize"; + uint64 m; +- tmsize_t n; + m=TIFFVStripSize64(tif,nrows); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +@@ -213,15 +206,8 @@ TIFFStripSize(TIFF* tif) + { + static const char module[] = "TIFFStripSize"; + uint64 m; +- tmsize_t n; + m=TIFFStripSize64(tif); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +@@ -332,14 +318,8 @@ TIFFScanlineSize(TIFF* tif) + { + static const char module[] = "TIFFScanlineSize"; + uint64 m; +- tmsize_t n; + m=TIFFScanlineSize64(tif); +- n=(tmsize_t)m; +- if ((uint64)n!=m) { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +@@ -368,15 +348,8 @@ TIFFRasterScanlineSize(TIFF* tif) + { + static const char module[] = "TIFFRasterScanlineSize"; + uint64 m; +- tmsize_t n; + m=TIFFRasterScanlineSize64(tif); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* vim: set ts=8 sts=8 sw=8 noet: */ +diff --git a/libtiff/tif_tile.c b/libtiff/tif_tile.c +index 388e168..7d05750 100644 +--- a/libtiff/tif_tile.c ++++ b/libtiff/tif_tile.c +@@ -183,15 +183,8 @@ TIFFTileRowSize(TIFF* tif) + { + static const char module[] = "TIFFTileRowSize"; + uint64 m; +- tmsize_t n; + m=TIFFTileRowSize64(tif); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +@@ -250,15 +243,8 @@ TIFFVTileSize(TIFF* tif, uint32 nrows) + { + static const char module[] = "TIFFVTileSize"; + uint64 m; +- tmsize_t n; + m=TIFFVTileSize64(tif,nrows); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +@@ -274,15 +260,8 @@ TIFFTileSize(TIFF* tif) + { + static const char module[] = "TIFFTileSize"; + uint64 m; +- tmsize_t n; + m=TIFFTileSize64(tif); +- n=(tmsize_t)m; +- if ((uint64)n!=m) +- { +- TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow"); +- n=0; +- } +- return(n); ++ return _TIFFCastUInt64ToSSize(tif, m, module); + } + + /* +diff --git a/libtiff/tiffiop.h b/libtiff/tiffiop.h +index 08e5dc4..d4b8631 100644 +--- a/libtiff/tiffiop.h ++++ b/libtiff/tiffiop.h +@@ -79,6 +79,9 @@ extern int snprintf(char* str, size_t size, const char* format, ...); + #define FALSE 0 + #endif + ++#define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0)) ++#define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1) ++ + typedef struct client_info { + struct client_info *next; + void *data; +@@ -260,7 +263,7 @@ struct tiff { + #define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3) + #define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y)) + +-/* Safe multiply which returns zero if there is an integer overflow */ ++/* Safe multiply which returns zero if there is an *unsigned* integer overflow. This macro is not safe for *signed* integer types */ + #define TIFFSafeMultiply(t,v,m) ((((t)(m) != (t)0) && (((t)(((v)*(m))/(m))) == (t)(v))) ? (t)((v)*(m)) : (t)0) + + #define TIFFmax(A,B) ((A)>(B)?(A):(B)) +@@ -366,6 +369,8 @@ extern TIFFErrorHandlerExt _TIFFerrorHandlerExt; + + extern uint32 _TIFFMultiply32(TIFF*, uint32, uint32, const char*); + extern uint64 _TIFFMultiply64(TIFF*, uint64, uint64, const char*); ++extern tmsize_t _TIFFMultiplySSize(TIFF*, tmsize_t, tmsize_t, const char*); ++extern tmsize_t _TIFFCastUInt64ToSSize(TIFF*, uint64, const char*); + extern void* _TIFFCheckMalloc(TIFF*, tmsize_t, tmsize_t, const char*); + extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*); + +-- +2.21.0 + diff --git a/SPECS/libtiff.spec b/SPECS/libtiff.spec index 42dd6a0..4ce6c17 100644 --- a/SPECS/libtiff.spec +++ b/SPECS/libtiff.spec @@ -1,7 +1,7 @@ Summary: Library of functions for manipulating TIFF format image files Name: libtiff Version: 4.0.9 -Release: 15%{?dist} +Release: 17%{?dist} License: libtiff Group: System Environment/Libraries URL: http://www.simplesystems.org/libtiff/ @@ -21,6 +21,7 @@ Patch9: libtiff-coverity.patch Patch10: libtiff-CVE-2018-18557.patch Patch11: libtiff-CVE-2018-18661.patch Patch12: libtiff-CVE-2018-12900.patch +Patch13: libtiff-CVE-2019-14973.patch BuildRequires: gcc, gcc-c++ BuildRequires: zlib-devel libjpeg-devel jbigkit-devel @@ -85,6 +86,7 @@ image files using the libtiff library. %patch10 -p1 %patch11 -p1 %patch12 -p1 +%patch13 -p1 # Use build system's libtool.m4, not the one in the package. rm -f libtool.m4 @@ -188,6 +190,12 @@ find html -name 'Makefile*' | xargs rm %{_mandir}/man1/* %changelog +* Thu Nov 28 2019 Nikola Forró - 4.0.9-17 +- Add upstream test suite and enable it in gating + +* Wed Nov 27 2019 Nikola Forró - 4.0.9-16 +- Fix CVE-2019-14973 (#1755705) + * Wed Jun 12 2019 Nikola Forró - 4.0.9-15 - Fix DIVIDE_BY_ZERO in patch for CVE-2018-12900 (#1595579)