Add reproducer for CVE-2017-1000126 to the test suite

tests/bugfixes/github/test_CVE_2017_1000126.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import system_tests
+
+
+class TestCvePoC(system_tests.Case):
+
+    url = "https://github.com/Exiv2/exiv2/issues/175"
+
+    filename = "{data_path}/cve_2017_1000126_stack-oob-read.webp"
+    commands = ["{exiv2} " + filename]
+    stdout = [""]
+    stderr = ["""{exiv2_exception_msg} """ + filename + """:
+{kerCorruptedMetadata}
+"""]
+    retval = [1]