CVE-2014-6052

Published: 24 September 2014

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.

Priority

Medium

Status

Package Release Status
italc
Launchpad, Ubuntu, Debian
Upstream
Released (1:3.0.3+dfsg1-1+deb9u1, 1:2.0.2+dfsg1-2+deb8u1)
Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:3.0.1+dfsg1-1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:2.0.2+dfsg1-4ubuntu0.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was needed)
krfb
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected)
libvncserver
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [0.9.9+dfsg-1ubuntu1.1])
Patches:
Upstream: https://github.com/newsoft/libvncserver/commit/045a044e8ae79db9244593fbce154cdf6e843273
Upstream: https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812