TightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tightvnc | Tightvnc | 1.3.10 (including) | 1.3.10 (including) |
| Libvncserver | Ubuntu | bionic | * |
| Libvncserver | Ubuntu | disco | * |
| Libvncserver | Ubuntu | eoan | * |
| Libvncserver | Ubuntu | focal | * |
| Libvncserver | Ubuntu | trusty | * |
| Libvncserver | Ubuntu | xenial | * |
| Ssvnc | Ubuntu | bionic | * |
| Ssvnc | Ubuntu | disco | * |
| Ssvnc | Ubuntu | eoan | * |
| Ssvnc | Ubuntu | groovy | * |
| Ssvnc | Ubuntu | hirsute | * |
| Ssvnc | Ubuntu | impish | * |
| Ssvnc | Ubuntu | kinetic | * |
| Ssvnc | Ubuntu | lunar | * |
| Ssvnc | Ubuntu | mantic | * |
| Ssvnc | Ubuntu | trusty | * |
| Ssvnc | Ubuntu | xenial | * |
| Tightvnc | Ubuntu | bionic | * |
| Tightvnc | Ubuntu | disco | * |
| Tightvnc | Ubuntu | eoan | * |
| Tightvnc | Ubuntu | groovy | * |
| Tightvnc | Ubuntu | hirsute | * |
| Tightvnc | Ubuntu | impish | * |
| Tightvnc | Ubuntu | kinetic | * |
| Tightvnc | Ubuntu | lunar | * |
| Tightvnc | Ubuntu | mantic | * |
| Tightvnc | Ubuntu | trusty | * |
| Tightvnc | Ubuntu | trusty/esm | * |
| Tightvnc | Ubuntu | xenial | * |
| Veyon | Ubuntu | disco | * |
| Veyon | Ubuntu | eoan | * |
| Veyon | Ubuntu | groovy | * |
| Veyon | Ubuntu | hirsute | * |
| Veyon | Ubuntu | impish | * |
| Veyon | Ubuntu | kinetic | * |
| Veyon | Ubuntu | lunar | * |
| Veyon | Ubuntu | mantic | * |
| Veyon | Ubuntu | trusty | * |
| Vncsnapshot | Ubuntu | bionic | * |
| Vncsnapshot | Ubuntu | disco | * |
| Vncsnapshot | Ubuntu | eoan | * |
| Vncsnapshot | Ubuntu | groovy | * |
| Vncsnapshot | Ubuntu | hirsute | * |
| Vncsnapshot | Ubuntu | impish | * |
| Vncsnapshot | Ubuntu | kinetic | * |
| Vncsnapshot | Ubuntu | lunar | * |
| Vncsnapshot | Ubuntu | mantic | * |
| Vncsnapshot | Ubuntu | trusty | * |
| Vncsnapshot | Ubuntu | xenial | * |
| X11vnc | Ubuntu | bionic | * |
| X11vnc | Ubuntu | disco | * |
| X11vnc | Ubuntu | eoan | * |
| X11vnc | Ubuntu | groovy | * |
| X11vnc | Ubuntu | hirsute | * |
| X11vnc | Ubuntu | impish | * |
| X11vnc | Ubuntu | kinetic | * |
| X11vnc | Ubuntu | lunar | * |
| X11vnc | Ubuntu | mantic | * |
| X11vnc | Ubuntu | trusty | * |
| X11vnc | Ubuntu | trusty/esm | * |
| X11vnc | Ubuntu | xenial | * |