Description
An issue was discovered in vcSetXCutTextProc() in VNConsole.c in LinuxVNC and VNCommand from the LibVNC/vncterm distribution through 0.9.10. Missing sanitization of the client-specified message length may cause integer overflow or possibly have unspecified other impact via a specially crafted VNC packet.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | vncterm | No fix yet | — |
| Ubuntu 22.04 LTS | vncterm | No fix yet | — |
| Ubuntu 20.04 LTS | vncterm | No fix yet | — |
| Ubuntu 18.04 LTS | vncterm | No fix yet | — |
| Ubuntu 16.04 LTS | vncterm | No fix yet | — |