From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 9 Feb 2018 00:43:26 +0000 (-0500)
Subject: https://github.com/ImageMagick/ImageMagick/issues/956
X-Git-Tag: 7.0.7-23~90
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=73fbc6a557b4f63af18b2debe83f817859ef7481;p=imagemagick

https://github.com/ImageMagick/ImageMagick/issues/956
---

diff --git a/coders/sun.c b/coders/sun.c
index b36a9ea23..fe6277de9 100644
--- a/coders/sun.c
+++ b/coders/sun.c
@@ -344,6 +344,8 @@ static Image *ReadSUNImage(const ImageInfo *image_info,ExceptionInfo *exception)
           image->colors=one << sun_info.depth;
         if (sun_info.maptype == RMT_EQUAL_RGB)
           image->colors=sun_info.maplength/3;
+        if (image->colors == 0)
+          ThrowReaderException(CorruptImageError,"ImproperImageHeader");
         if (AcquireImageColormap(image,image->colors,exception) == MagickFalse)
           ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
       }