forked from brl/citadel
66 lines
2.4 KiB
Diff
66 lines
2.4 KiB
Diff
From a5e8245cc67646f7b448b4ca29258eaac418102c Mon Sep 17 00:00:00 2001
|
|
From: Even Rouault <even.rouault@spatialys.com>
|
|
Date: Wed, 23 Aug 2017 13:33:42 +0000
|
|
Subject: [PATCH] * libtiff/tif_dirwrite.c: replace assertion to tag value not
|
|
fitting on uint32 when selecting the value of SubIFD tag by runtime check (in
|
|
TIFFWriteDirectoryTagSubifd()). Fixes
|
|
http://bugzilla.maptools.org/show_bug.cgi?id=2728 Reported by team OWL337
|
|
|
|
SubIFD tag by runtime check (in TIFFWriteDirectorySec())
|
|
|
|
Upstream-Status: Backport
|
|
[https://github.com/vadz/libtiff/commit/b6af137bf9ef852f1a48a50a5afb88f9e9da01cc]
|
|
|
|
CVE: CVE-2017-13727
|
|
|
|
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
|
|
---
|
|
ChangeLog | 10 +++++++++-
|
|
libtiff/tif_dirwrite.c | 9 ++++++++-
|
|
2 files changed, 17 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/ChangeLog b/ChangeLog
|
|
index 3e299d9..8f5efe9 100644
|
|
--- a/ChangeLog
|
|
+++ b/ChangeLog
|
|
@@ -1,7 +1,15 @@
|
|
2017-08-23 Even Rouault <even.rouault at spatialys.com>
|
|
|
|
+ * libtiff/tif_dirwrite.c: replace assertion to tag value not fitting
|
|
+ on uint32 when selecting the value of SubIFD tag by runtime check
|
|
+ (in TIFFWriteDirectoryTagSubifd()).
|
|
+ Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2728
|
|
+ Reported by team OWL337
|
|
+
|
|
+2017-08-23 Even Rouault <even.rouault at spatialys.com>
|
|
+
|
|
* libtiff/tif_dirwrite.c: replace assertion related to not finding the
|
|
- SubIFD tag by runtime check.
|
|
+ SubIFD tag by runtime check (in TIFFWriteDirectorySec())
|
|
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2727
|
|
Reported by team OWL337
|
|
|
|
diff --git a/libtiff/tif_dirwrite.c b/libtiff/tif_dirwrite.c
|
|
index 14090ae..f0a4baa 100644
|
|
--- a/libtiff/tif_dirwrite.c
|
|
+++ b/libtiff/tif_dirwrite.c
|
|
@@ -1949,7 +1949,14 @@ TIFFWriteDirectoryTagSubifd(TIFF* tif, uint32* ndir, TIFFDirEntry* dir)
|
|
for (p=0; p < tif->tif_dir.td_nsubifd; p++)
|
|
{
|
|
assert(pa != 0);
|
|
- assert(*pa <= 0xFFFFFFFFUL);
|
|
+
|
|
+ /* Could happen if an classicTIFF has a SubIFD of type LONG8 (which is illegal) */
|
|
+ if( *pa > 0xFFFFFFFFUL)
|
|
+ {
|
|
+ TIFFErrorExt(tif->tif_clientdata,module,"Illegal value for SubIFD tag");
|
|
+ _TIFFfree(o);
|
|
+ return(0);
|
|
+ }
|
|
*pb++=(uint32)(*pa++);
|
|
}
|
|
n=TIFFWriteDirectoryTagCheckedIfdArray(tif,ndir,dir,TIFFTAG_SUBIFD,tif->tif_dir.td_nsubifd,o);
|
|
--
|
|
2.7.4
|
|
|