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CVE-2019-5086: xcftools flattenIncrementally tiles walk code execution vulnerability #12

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carnil opened this issue Nov 22, 2019 · 1 comment

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@carnil
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@carnil carnil commented Nov 22, 2019

Hi

See TALOS report at TALOS-2019-0878.

@hlef

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@hlef hlef commented Dec 13, 2019

@j-jorge well, this issue could be as easy to fix as

diff --git a/xcftools.h b/xcftools.h
index 5a1efcc..9eb26da 100644
--- a/xcftools.h
+++ b/xcftools.h
@@ -121,7 +121,7 @@ FILE* openout(const char*);
 void closeout(FILE *,const char*);

 struct rect {
-  int t, b, l, r ;
+  unsigned t, b, l, r ;
 };

 #define isSubrect(A,B) \

I wrote a reproducer. Please contact me directly if you need it.

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