tightvnc: add patches for four CVEs

Security fixes for: * CVE-2019-8287 * CVE-2019-15678 * CVE-2019-15679 * CVE-2019-15680 mostly adapted from patches fixing similar issues in the actively maintained libvnc (#73970)
2019-11-24 19:44:01 +01:00
parent 1206faa6d5
commit 2482f8b8dc
5 changed files with 74 additions and 0 deletions
@@ -0,0 +1,19 @@
+Adapted from https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7
+diff --git a/vncviewer/rfbproto.c b/vncviewer/rfbproto.c
+index 04b0230..bd11b54 100644
+--- a/vncviewer/rfbproto.c
+++ b/vncviewer/rfbproto.c
+@@ -303,7 +303,12 @@ InitialiseRFBConnection(void)
+   si.format.blueMax = Swap16IfLE(si.format.blueMax);
+   si.nameLength = Swap32IfLE(si.nameLength);
+ 
+-  /* FIXME: Check arguments to malloc() calls. */
+  if (si.nameLength > 1<<20) {
+    fprintf(stderr, "Too big desktop name length sent by server: %lu B > 1 MB\n",
+            (unsigned long)si.nameLength);
+    return False;
+  }
+
+   desktopName = malloc(si.nameLength + 1);
+   if (!desktopName) {
+     fprintf(stderr, "Error allocating memory for desktop name, %lu bytes\n",