Author: rjones
Update of /cvs/pkgs/rpms/ocaml-camlimages/devel
In directory cvs1.fedora.phx.redhat.com:/tmp/cvs-serv604
Added Files:
camlimages-oversized-png-check-CVE-2009-2295.patch
Log Message:
Add patch.
camlimages-oversized-png-check-CVE-2009-2295.patch:
--- NEW FILE camlimages-oversized-png-check-CVE-2009-2295.patch ---
--- camlimages-3.0.1/src/pngread.c 2007-01-18 10:29:57.000000000 +0000
+++ camlimages-3.0.1-oversized-png-checks/src/pngread.c 2009-07-03 14:19:42.000000000 +0100
@@ -26,6 +26,12 @@
#define PNG_TAG_INDEX16 2
#define PNG_TAG_INDEX4 3
+/* Test if x or y are negative, or if multiplying x * y would cause an
+ * arithmetic overflow.
+ */
+#define oversized(x, y) \
+ ((x) < 0 || (y) < 0 || (x) * (y) < (x) || (x) * (y) < (y))
+
value read_png_file_as_rgb24( name )
value name;
{
@@ -81,6 +87,9 @@
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
&interlace_type, NULL, NULL);
+ if (oversized (width, height))
+ failwith ("png error: image contains oversized or bogus width and height");
+
if ( color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ) {
png_set_gray_to_rgb(png_ptr);
@@ -102,6 +111,9 @@
rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+ if (oversized (rowbytes, height))
+ failwith ("png error: image contains oversized or bogus rowbytes and height");
+
{
int i;
png_bytep *row_pointers;
@@ -235,6 +247,9 @@
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
&interlace_type, NULL, NULL);
+ if (oversized (width, height))
+ failwith ("png error: image contains oversized or bogus width and height");
+
if ( color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA ) {
png_set_gray_to_rgb(png_ptr);
@@ -251,6 +266,9 @@
rowbytes = png_get_rowbytes(png_ptr, info_ptr);
+ if (oversized (rowbytes, height))
+ failwith ("png error: image contains oversized or bogus rowbytes and height");
+
/*
fprintf(stderr, "pngread.c: actual loading\n"); fflush(stderr);
*/
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