File CVE-2018-19198.patch of Package uriparser

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File CVE-2018-19198.patch of Package uriparser (Revision 1789593be508c30864abed8a56f3b35a)

Currently displaying revision 1789593be508c30864abed8a56f3b35a , Show latest

Index: uriparser-uriparser-0.8.5/src/UriQuery.c
===================================================================
--- uriparser-uriparser-0.8.5.orig/src/UriQuery.c
+++ uriparser-uriparser-0.8.5/src/UriQuery.c
@@ -223,6 +223,7 @@ int URI_FUNC(ComposeQueryEngine)(URI_CHA
 
 			/* Copy key */
 			if (firstItem == URI_TRUE) {
+				ampersandLen = 1;
 				firstItem = URI_FALSE;
 			} else {
 				write[0] = _UT('&');
Index: uriparser-uriparser-0.8.5/test/test.cpp
===================================================================
--- uriparser-uriparser-0.8.5.orig/test/test.cpp
+++ uriparser-uriparser-0.8.5/test/test.cpp
@@ -103,6 +103,7 @@ public:
 		TEST_ADD(UriSuite::testQueryList)
 		TEST_ADD(UriSuite::testQueryListPair)
 		TEST_ADD(UriSuite::testQueryDissection_Bug3590761)
+		TEST_ADD(UriSuite::testQueryCompositionMathWrite_GoogleAutofuzz113244572)
 		TEST_ADD(UriSuite::testFreeCrash_Bug20080827)
 		TEST_ADD(UriSuite::testParseInvalid_Bug16)
 		TEST_ADD(UriSuite::testRangeComparison)
@@ -1739,6 +1740,33 @@ Rule                                | Ex
 		uriFreeQueryListA(queryList);
 	}
 
+	void testQueryCompositionMathWrite_GoogleAutofuzz113244572() {
+		UriQueryListA second = { .key = "\x11", .value = NULL, .next = NULL };
+		UriQueryListA first = { .key = "\x01", .value = "\x02", .next = &second };
+		const UriBool spaceToPlus = URI_TRUE;
+		const UriBool normalizeBreaks = URI_FALSE;  /* for factor 3 but 6 */
+		const int charsRequired = (3 + 1 + 3) + 1 + (3);
+		{
+			// Minimum space to hold everything fine
+			const char * const expected = "%01=%02" "&" "%11";
+			char dest[charsRequired + 1];
+			int charsWritten;
+			TEST_ASSERT(uriComposeQueryExA(dest, &first, sizeof(dest),
+					&charsWritten, spaceToPlus, normalizeBreaks)
+				== URI_SUCCESS);
+			TEST_ASSERT(! strcmp(dest, expected));
+			TEST_ASSERT(charsWritten == strlen(expected) + 1);
+		}
+		{
+			// Previous math failed to take ampersand into account
+			char dest[charsRequired + 1 - 1];
+			int charsWritten;
+			TEST_ASSERT(uriComposeQueryExA(dest, &first, sizeof(dest),
+					&charsWritten, spaceToPlus, normalizeBreaks)
+				== URI_ERROR_OUTPUT_TOO_LARGE);
+		}
+	}
+
 	void testFreeCrash_Bug20080827() {
 		char const * const sourceUri = "abc";
 		char const * const baseUri = "http://www.example.org/";

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File CVE-2018-19198.patch of Package uriparser (Revision 1789593be508c30864abed8a56f3b35a)

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