55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 5317ce215936ce611846557bb104b49d3b4c8345 Mon Sep 17 00:00:00 2001
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From: Even Rouault <even.rouault@spatialys.com>
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Date: Wed, 23 Aug 2017 13:21:41 +0000
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Subject: [PATCH] * libtiff/tif_dirwrite.c: replace assertion related to not
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finding the SubIFD tag by runtime check. Fixes
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http://bugzilla.maptools.org/show_bug.cgi?id=2727 Reported by team OWL337
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Upstream-Status: Backport
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[https://github.com/vadz/libtiff/commit/f91ca83a21a6a583050e5a5755ce1441b2bf1d7e]
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CVE: CVE-2017-13726
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Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
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---
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ChangeLog | 7 +++++++
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libtiff/tif_dirwrite.c | 7 ++++++-
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2 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/ChangeLog b/ChangeLog
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index 6980da8..3e299d9 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,10 @@
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+2017-08-23 Even Rouault <even.rouault at spatialys.com>
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+
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+ * libtiff/tif_dirwrite.c: replace assertion related to not finding the
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+ SubIFD tag by runtime check.
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+ Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2727
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+ Reported by team OWL337
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+
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2017-07-15 Even Rouault <even.rouault at spatialys.com>
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* tools/tiff2pdf.c: prevent heap buffer overflow write in "Raw"
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diff --git a/libtiff/tif_dirwrite.c b/libtiff/tif_dirwrite.c
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index 8d6686b..14090ae 100644
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--- a/libtiff/tif_dirwrite.c
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+++ b/libtiff/tif_dirwrite.c
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@@ -821,7 +821,12 @@ TIFFWriteDirectorySec(TIFF* tif, int isimage, int imagedone, uint64* pdiroff)
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TIFFDirEntry* nb;
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for (na=0, nb=dir; ; na++, nb++)
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{
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- assert(na<ndir);
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+ if( na == ndir )
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+ {
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+ TIFFErrorExt(tif->tif_clientdata,module,
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+ "Cannot find SubIFD tag");
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+ goto bad;
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+ }
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if (nb->tdir_tag==TIFFTAG_SUBIFD)
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break;
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}
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--
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2.7.4
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