File r1835-Fix-for-CVE-2017-5852.patch of Package podofo.23799

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r1835 | aja_ | 2017-04-07 19:22:53 +0200 (vie, 07 abr 2017) | 2 lines

Fix for CVE-2017-5852 with added error code


Index: src/base/PdfError.cpp
===================================================================
--- src/base/PdfError.cpp	(revision 1834)
+++ src/base/PdfError.cpp	(revision 1835)
@@ -222,6 +222,9 @@
         case ePdfError_InvalidEnumValue:
             pszMsg = "ePdfError_InvalidEnumValue";
             break;
+        case ePdfError_BrokenFile:
+            pszMsg = "ePdfError_BrokenFile";
+            break;
         case ePdfError_PageNotFound:
             pszMsg = "ePdfError_PageNotFound";
             break;
@@ -397,6 +400,9 @@
         case ePdfError_InvalidEnumValue:
             pszMsg = "An invalid enum value was specified.";
             break;
+        case ePdfError_BrokenFile:
+            pszMsg = "The file content is broken.";
+            break;
         case ePdfError_PageNotFound:
             pszMsg = "The requested page could not be found in the PDF.";
             break;
Index: src/base/PdfError.h
===================================================================
--- src/base/PdfError.h	(revision 1834)
+++ src/base/PdfError.h	(revision 1835)
#@@ -73,6 +73,7 @@
#     ePdfError_ValueOutOfRange,          /**< The specified memory is out of the allowed range. */
#     ePdfError_InternalLogic,            /**< An internal sanity check or assertion failed. */ 
#     ePdfError_InvalidEnumValue,         /**< An invalid enum value was specified. */
#+    ePdfError_BrokenFile,               /**< The file content is broken. */
# 
#     ePdfError_PageNotFound,             /**< The requested page could not be found in the PDF. */
# 
@@ -110,6 +110,8 @@ enum EPdfError {
 
     ePdfError_NotCompiled,              /**< This feature was disabled during compile time. */
 
+    ePdfError_BrokenFile,               /**< The file content is broken. */
+
     ePdfError_Unknown = 0xffff          /**< Unknown error */
 };
 
Index: src/doc/PdfPage.cpp
===================================================================
--- src/doc/PdfPage.cpp	(revision 1834)
+++ src/doc/PdfPage.cpp	(revision 1835)
@@ -228,6 +228,14 @@
     if( inObject->GetDictionary().HasKey( "Parent" ) ) 
     {
         pObj = inObject->GetIndirectKey( "Parent" );
+        if( pObj == inObject )
+        {
+            std::ostringstream oss;
+            oss << "Object " << inObject->Reference().ObjectNumber() << " "
+                << inObject->Reference().GenerationNumber() << " references itself as Parent";
+            PODOFO_RAISE_ERROR_INFO( ePdfError_BrokenFile, oss.str().c_str() );
+        }
+
         if( pObj )
             pObj = GetInheritedKeyFromObject( inKey, pObj );
     }

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