mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-15 03:15:09 -05:00
86fa2ea92f
* gnu/packages/patches/libtiff-CVE-2015-8665+CVE-2015-8683.patch, gnu/packages/patches/libtiff-oob-accesses-in-decode.patch, gnu/packages/patches/libtiff-oob-write-in-nextdecode.patch: New files. * gnu-system.am (dist_patch_DATA): Add them. * gnu/packages/image.scm (libtiff): Update to 4.0.6. [source]: Add patches.
49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
2015-12-27 Even Rouault <even.rouault at spatialys.com>
|
|
|
|
* libtiff/tif_next.c: fix potential out-of-bound write in NeXTDecode()
|
|
triggered by http://lcamtuf.coredump.cx/afl/vulns/libtiff5.tif
|
|
(bugzilla #2508)
|
|
|
|
diff -u -r1.16 -r1.18
|
|
--- libtiff/libtiff/tif_next.c 29 Dec 2014 12:09:11 -0000 1.16
|
|
+++ libtiff/libtiff/tif_next.c 27 Dec 2015 17:14:52 -0000 1.18
|
|
@@ -1,4 +1,4 @@
|
|
-/* $Id: tif_next.c,v 1.16 2014-12-29 12:09:11 erouault Exp $ */
|
|
+/* $Id: tif_next.c,v 1.18 2015-12-27 17:14:52 erouault Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988-1997 Sam Leffler
|
|
@@ -37,7 +37,7 @@
|
|
case 0: op[0] = (unsigned char) ((v) << 6); break; \
|
|
case 1: op[0] |= (v) << 4; break; \
|
|
case 2: op[0] |= (v) << 2; break; \
|
|
- case 3: *op++ |= (v); break; \
|
|
+ case 3: *op++ |= (v); op_offset++; break; \
|
|
} \
|
|
}
|
|
|
|
@@ -103,6 +103,7 @@
|
|
}
|
|
default: {
|
|
uint32 npixels = 0, grey;
|
|
+ tmsize_t op_offset = 0;
|
|
uint32 imagewidth = tif->tif_dir.td_imagewidth;
|
|
if( isTiled(tif) )
|
|
imagewidth = tif->tif_dir.td_tilewidth;
|
|
@@ -122,10 +123,15 @@
|
|
* bounds, potentially resulting in a security
|
|
* issue.
|
|
*/
|
|
- while (n-- > 0 && npixels < imagewidth)
|
|
+ while (n-- > 0 && npixels < imagewidth && op_offset < scanline)
|
|
SETPIXEL(op, grey);
|
|
if (npixels >= imagewidth)
|
|
break;
|
|
+ if (op_offset >= scanline ) {
|
|
+ TIFFErrorExt(tif->tif_clientdata, module, "Invalid data for scanline %ld",
|
|
+ (long) tif->tif_row);
|
|
+ return (0);
|
|
+ }
|
|
if (cc == 0)
|
|
goto bad;
|
|
n = *bp++, cc--;
|