diff options
Diffstat (limited to 'main/tiff/CVE-2016-10270.patch')
| -rw-r--r-- | main/tiff/CVE-2016-10270.patch | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/main/tiff/CVE-2016-10270.patch b/main/tiff/CVE-2016-10270.patch deleted file mode 100644 index 4c419decca..0000000000 --- a/main/tiff/CVE-2016-10270.patch +++ /dev/null @@ -1,104 +0,0 @@ -From 9a72a69e035ee70ff5c41541c8c61cd97990d018 Mon Sep 17 00:00:00 2001 -From: erouault <erouault> -Date: Sat, 3 Dec 2016 11:02:15 +0000 -Subject: [PATCH] * libtiff/tif_dirread.c: modify - ChopUpSingleUncompressedStrip() to instanciate compute ntrips as - TIFFhowmany_32(td->td_imagelength, rowsperstrip), instead of a logic based on - the total size of data. Which is faulty is the total size of data is not - sufficient to fill the whole image, and thus results in reading outside of - the StripByCounts/StripOffsets arrays when using TIFFReadScanline(). Reported - by Agostino Sarubbo. Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2608. - -* libtiff/tif_strip.c: revert the change in TIFFNumberOfStrips() done -for http://bugzilla.maptools.org/show_bug.cgi?id=2587 / CVE-2016-9273 since -the above change is a better fix that makes it unnecessary. - ---- - libtiff/tif_dirread.c | 22 ++++++++++------------ - libtiff/tif_strip.c | 9 --------- - 2 files changed, 25 insertions(+), 21 deletions(-) - -diff --git a/libtiff/tif_dirread.c b/libtiff/tif_dirread.c -index 3eec79c9..570d0c32 100644 ---- a/libtiff/tif_dirread.c -+++ b/libtiff/tif_dirread.c -@@ -5502,8 +5502,7 @@ ChopUpSingleUncompressedStrip(TIFF* tif) - uint64 rowblockbytes; - uint64 stripbytes; - uint32 strip; -- uint64 nstrips64; -- uint32 nstrips32; -+ uint32 nstrips; - uint32 rowsperstrip; - uint64* newcounts; - uint64* newoffsets; -@@ -5534,18 +5533,17 @@ ChopUpSingleUncompressedStrip(TIFF* tif) - return; - - /* -- * never increase the number of strips in an image -+ * never increase the number of rows per strip - */ - if (rowsperstrip >= td->td_rowsperstrip) - return; -- nstrips64 = TIFFhowmany_64(bytecount, stripbytes); -- if ((nstrips64==0)||(nstrips64>0xFFFFFFFF)) /* something is wonky, do nothing. */ -- return; -- nstrips32 = (uint32)nstrips64; -+ nstrips = TIFFhowmany_32(td->td_imagelength, rowsperstrip); -+ if( nstrips == 0 ) -+ return; - -- newcounts = (uint64*) _TIFFCheckMalloc(tif, nstrips32, sizeof (uint64), -+ newcounts = (uint64*) _TIFFCheckMalloc(tif, nstrips, sizeof (uint64), - "for chopped \"StripByteCounts\" array"); -- newoffsets = (uint64*) _TIFFCheckMalloc(tif, nstrips32, sizeof (uint64), -+ newoffsets = (uint64*) _TIFFCheckMalloc(tif, nstrips, sizeof (uint64), - "for chopped \"StripOffsets\" array"); - if (newcounts == NULL || newoffsets == NULL) { - /* -@@ -5562,18 +5560,18 @@ ChopUpSingleUncompressedStrip(TIFF* tif) - * Fill the strip information arrays with new bytecounts and offsets - * that reflect the broken-up format. - */ -- for (strip = 0; strip < nstrips32; strip++) { -+ for (strip = 0; strip < nstrips; strip++) { - if (stripbytes > bytecount) - stripbytes = bytecount; - newcounts[strip] = stripbytes; -- newoffsets[strip] = offset; -+ newoffsets[strip] = stripbytes ? offset : 0; - offset += stripbytes; - bytecount -= stripbytes; - } - /* - * Replace old single strip info with multi-strip info. - */ -- td->td_stripsperimage = td->td_nstrips = nstrips32; -+ td->td_stripsperimage = td->td_nstrips = nstrips; - TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip); - - _TIFFfree(td->td_stripbytecount); -diff --git a/libtiff/tif_strip.c b/libtiff/tif_strip.c -index 4c46ecf5..1676e47d 100644 ---- a/libtiff/tif_strip.c -+++ b/libtiff/tif_strip.c -@@ -63,15 +63,6 @@ TIFFNumberOfStrips(TIFF* tif) - TIFFDirectory *td = &tif->tif_dir; - uint32 nstrips; - -- /* If the value was already computed and store in td_nstrips, then return it, -- since ChopUpSingleUncompressedStrip might have altered and resized the -- since the td_stripbytecount and td_stripoffset arrays to the new value -- after the initial affectation of td_nstrips = TIFFNumberOfStrips() in -- tif_dirread.c ~line 3612. -- See http://bugzilla.maptools.org/show_bug.cgi?id=2587 */ -- if( td->td_nstrips ) -- return td->td_nstrips; -- - nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 : - TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip)); - if (td->td_planarconfig == PLANARCONFIG_SEPARATE) --- -2.11.0 - |