gtk-vnc 0.4.2 and older doesn't check framebuffer boundaries correctly when updating framebuffer which may lead to memory corruption when rendering
https://git.gnome.org/browse/gtk-vnc/commit/?id=f3fc5e57a78d4be9872f1394f697b9929873a737
Source: Mitre, NVD
Published: 2017-07-17
Updated: 2017-07-19
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical