Heap buffer overwrite on malformed VCard

ID MFSA2006-49
Type mozilla
Reporter Mozilla Foundation
Modified 2006-07-25T00:00:00


A VCard attachment with a malformed base64 field (such as a photo) can trigger a heap buffer overwrite. These have proven exploitable in the past, though in this case the overwrite is accompanied by an integer underflow that would attempt to copy more data than the typical machine has, leading to a crash.