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AUSCERT Security Bulletin
ASB-2014.0002
A vulnerability has been identified in RealVNC
3 January 2014
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AusCERT Security Bulletin Summary
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Product: RealVNC
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-6886
Member content until: Sunday, February 2 2014
OVERVIEW
A vulnerability has been identified in RealVNC version 5.0.6. [1]
IMPACT
The vendor has provided the following information concerning the
vulnerability:
"Local users can no longer execute arbitrary code as root by passing
a maliciously crafted argument to the VNC Server in User Mode
(vncserver-x11) or Virtual Mode (Xvnc) setuid-root helpers. Note this
issue only affected 5.0.6." [1]
MITIGATION
Users should update to the latest version of RealVNC.
REFERENCES
[1] VNC 5.0.7, released 19th December 2013
http://www.realvnc.com/products/vnc/documentation/5.0/release-notes/
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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