Fix parsing of IPv4 addresses with certain symbols

Add some extra checks to the parser to make sure that addresses
like "300-05" aren't interpreted as valid IPv4 addresses.

Change-Id: I12475eebc9452e060779bb05e2b4ad9512a28281
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/corelib/io/qipaddress.cpp b/src/corelib/io/qipaddress.cpp
index ef0ca0269e..47cbbe066a 100644
--- a/src/corelib/io/qipaddress.cpp
+++ b/src/corelib/io/qipaddress.cpp
@@ -111,6 +111,9 @@ static bool parseIp4Internal(IPv4Address &address, const char *ptr, bool acceptL
             return false;
         else if (dotCount == 3 || *endptr == '\0')
             return true;
+        if (*endptr != '.')
+            return false;
+
         ++dotCount;
         ptr = endptr + 1;
     }