An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.
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 |
|---|---|---|---|
| Libvncserver | Libvnc_project | * | 0.9.12 (including) |
| Libvncserver | Ubuntu | focal | * |
| Libvncserver | Ubuntu | trusty | * |
| Veyon | Ubuntu | eoan | * |
| Veyon | Ubuntu | groovy | * |
| Veyon | Ubuntu | hirsute | * |
| Veyon | Ubuntu | impish | * |
| Veyon | Ubuntu | kinetic | * |
| Veyon | Ubuntu | lunar | * |
| Veyon | Ubuntu | mantic | * |
| X11vnc | Ubuntu | bionic | * |
| 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 | * |