diff options
Diffstat (limited to 'package/tiff/0010-libtiff-tif_jpeg.c-avoid-integer-division-by-zero-in.patch')
| -rw-r--r-- | package/tiff/0010-libtiff-tif_jpeg.c-avoid-integer-division-by-zero-in.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/package/tiff/0010-libtiff-tif_jpeg.c-avoid-integer-division-by-zero-in.patch b/package/tiff/0010-libtiff-tif_jpeg.c-avoid-integer-division-by-zero-in.patch new file mode 100644 index 0000000000..862aae2a5a --- /dev/null +++ b/package/tiff/0010-libtiff-tif_jpeg.c-avoid-integer-division-by-zero-in.patch @@ -0,0 +1,35 @@ +From 47f2fb61a3a64667bce1a8398a8fcb1b348ff122 Mon Sep 17 00:00:00 2001 +From: erouault <erouault> +Date: Wed, 11 Jan 2017 12:15:01 +0000 +Subject: [PATCH] * libtiff/tif_jpeg.c: avoid integer division by zero in + JPEGSetupEncode() when horizontal or vertical sampling is set to 0. Fixes + http://bugzilla.maptools.org/show_bug.cgi?id=2653 + +Fixes CVE-2017-7595 + +Signed-off-by: Peter Korsgaard <peter@korsgaard.com> +--- + libtiff/tif_jpeg.c | 7 +++++++ + 1 file changed, 13 insertions(+) + +diff --git a/libtiff/tif_jpeg.c b/libtiff/tif_jpeg.c +index 38595f98..6c17c388 100644 +--- a/libtiff/tif_jpeg.c ++++ b/libtiff/tif_jpeg.c +@@ -1626,6 +1626,13 @@ JPEGSetupEncode(TIFF* tif) + case PHOTOMETRIC_YCBCR: + sp->h_sampling = td->td_ycbcrsubsampling[0]; + sp->v_sampling = td->td_ycbcrsubsampling[1]; ++ if( sp->h_sampling == 0 || sp->v_sampling == 0 ) ++ { ++ TIFFErrorExt(tif->tif_clientdata, module, ++ "Invalig horizontal/vertical sampling value"); ++ return (0); ++ } ++ + /* + * A ReferenceBlackWhite field *must* be present since the + * default value is inappropriate for YCbCr. Fill in the +-- +2.11.0 + |
