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CVE-2014-6051

Published: 24 September 2014

Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.

Notes

AuthorNote
mdeslaur
krfb is only a server, this issue is client side.

Priority

Medium

Status

Package Release Status
italc
Launchpad, Ubuntu, Debian
bionic
Released (1:3.0.1+dfsg1-1)
focal Does not exist

trusty Does not exist
(trusty was needed)
upstream
Released (1:3.0.3+dfsg1-1+deb9u1, 1:2.0.2+dfsg1-2+deb8u1)
xenial
Released (1:2.0.2+dfsg1-4ubuntu0.1)
krfb
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Needs triage

libvncserver
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise
Released (0.9.8.2-2ubuntu1.1)
trusty
Released (0.9.9+dfsg-1ubuntu1.1)
upstream Needs triage

Patches:
upstream: https://github.com/newsoft/libvncserver/commit/045a044e8ae79db9244593fbce154cdf6e843273
upstream: https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812