rfbserver: don't leak stack memory to the remote

Thanks go to Pavel Cheremushkin of Kaspersky for reporting.
LibVNC · Aug 19, 2019 · d01e1bb · d01e1bb
1 parent e0a9d96
commit d01e1bb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/libvncserver/rfbserver.c b/libvncserver/rfbserver.c
@@ -3724,6 +3724,8 @@ rfbSendServerCutText(rfbScreenInfoPtr rfbScreen,char *str, int len)
     rfbServerCutTextMsg sct;
     rfbClientIteratorPtr iterator;
 
+    memset((char *)&sct, 0, sizeof(sct));
+
     iterator = rfbGetClientIterator(rfbScreen);
     while ((cl = rfbClientIteratorNext(iterator)) != NULL) {
         sct.type = rfbServerCutText;