libxrdp: fastpath input, validate eventFlags

10 years ago · 0a225729c7
parent 6e85223a8a
commit 0a225729c7
1 changed files with 10 additions and 0 deletions
--- a/libxrdp/xrdp_fastpath.c
+++ b/libxrdp/xrdp_fastpath.c
@ -169,6 +169,11 @@ xrdp_fastpath_process_EVENT_MOUSE(struct xrdp_fastpath *self, int eventFlags,
    int xPos;
    int yPos;

+    /* eventFlags MUST be zeroed out */
+    if (eventFlags != 0) {
+            return 1;
+    }
+
    if (!s_check_rem(s, 2 + 2 + 2))
    {
        return 1;
@ -201,6 +206,11 @@ xrdp_fastpath_process_EVENT_MOUSEX(struct xrdp_fastpath *self,
    int xPos;
    int yPos;

+    /* eventFlags MUST be zeroed out */
+    if (eventFlags != 0) {
+            return 1;
+    }
+
    if (!s_check_rem(s, 2 + 2 + 2))
    {
        return 1;