Lack of data validation In libvncserver
Description
The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not check certain malloc return values, which allows remote VNC servers to cause a denial of service (application crash) or possibly execute arbitrary code by specifying a large screen size in a (1) FramebufferUpdate, (2) ResizeFrameBuffer, or (3) PalmVNCReSizeFrameBuffer message.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 debian 13 | 0.9.9+dfsg-6.1 | ||
debian 13 | 4.1.4+repack1-1 | ||
debian 11 | 4.1.4+repack1-1 | ||
debian 14 | 0.9.9+dfsg-6.1 | ||
debian 14 | 4.1.4+repack1-1 | ||
debian 11 | 0.9.9+dfsg-6.1 | ||
debian 12 | 0.9.9+dfsg-6.1 | ||
debian 12 | 4.1.4+repack1-1 | ||
 rpm rhel6 | 0:0.9.7-7.el6_6.1 | ||
rpm rhel7 | 0:0.9.9-9.el7_0.1 |
Aliases
1. 2. 3. 4. 5.