CVE-2014-6052

NameCVE-2014-6052
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-197-1, DSA-3081-1
NVD severityhigh (attack range: remote)
Debian Bugs762745

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libvncserver (PTS)wheezy0.9.9+dfsg-1+deb7u1fixed
wheezy (security)0.9.9+dfsg-1+deb7u2fixed
jessie (security), jessie0.9.9+dfsg2-6.1+deb8u2fixed
buster, sid, stretch0.9.11+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libvncserversource(unstable)0.9.9+dfsg-6.1high762745
libvncserversourcesqueeze0.9.7-2+deb6u1highDLA-197-1
libvncserversourcewheezy0.9.9+dfsg-1+deb7u1highDSA-3081-1

Notes

https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812

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