Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruption and application crash) or possibly execute arbitrary code via a large length value in a message, related to the (a) ClientConnection::CheckBufferSize and (b) ClientConnection::CheckFileZipBufferSize functions in ClientConnection.cpp.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tightvnc | Tightvnc | 1.3.9 (including) | 1.3.9 (including) |
| Ultravnc | Ultravnc | 1.0.2 (including) | 1.0.2 (including) |
| Ultravnc | Ultravnc | 1.0.5 (including) | 1.0.5 (including) |