REDHAT-BUG-1144293: Buffer Overflow
First published: Fri Sep 19 2014(Updated: )
Two stack-based buffer overflow flaws were reported in LibVNCServer's file transfer handling. A VNC client could use these flaws to cause the VNC server to crash or, potentially, execute arbitrary code. Upstream commits: <a href="https://github.com/newsoft/libvncserver/commit/06ccdf016154fde8eccb5355613ba04c59127b2e">https://github.com/newsoft/libvncserver/commit/06ccdf016154fde8eccb5355613ba04c59127b2e</a> <a href="https://github.com/newsoft/libvncserver/commit/f528072216dec01cee7ca35d94e171a3b909e677">https://github.com/newsoft/libvncserver/commit/f528072216dec01cee7ca35d94e171a3b909e677</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Libvncserver |
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Reference Links
- https://github.com/newsoft/libvncserver/commit/06ccdf016154fde8eccb5355613ba04c59127b2e
- https://github.com/newsoft/libvncserver/commit/f528072216dec01cee7ca35d94e171a3b909e677
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1144293#c0
- https://github.com/newsoft/libvncserver/commit/
- http://seclists.org/oss-sec/2014/q3/639
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1145878
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1145879
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1145880
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1145883
- http://www.kde.org/info/security/advisory-20140923-1.txt
- http://koji.fedoraproject.org/koji/buildinfo?buildID=580492
- http://quickgit.kde.org/?p=krfb.git&a=commitdiff&h=2e211579455fd832fb21322482c005b6a85aa1bf&hp=857c2b411ed806ef806116407612a2d2a40fab9c
- https://rhn.redhat.com/errata/RHSA-2014-1826.html
- https://rhn.redhat.com/errata/RHSA-2014-1827.html
- https://rhn.redhat.com/errata/RHSA-2015-0113.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1144293
Frequently Asked Questions
What is the severity of REDHAT-BUG-1144293?
REDHAT-BUG-1144293 is classified as a critical vulnerability due to its potential for remote code execution.
How do I fix REDHAT-BUG-1144293?
To fix REDHAT-BUG-1144293, update the LibVNCServer to the latest version where the buffer overflow vulnerabilities have been addressed.
What systems are affected by REDHAT-BUG-1144293?
REDHAT-BUG-1144293 affects systems running vulnerable versions of LibVNCServer.
What can an attacker accomplish with REDHAT-BUG-1144293?
An attacker exploiting REDHAT-BUG-1144293 could crash the VNC server or potentially execute arbitrary code.
Is there a workaround for REDHAT-BUG-1144293?
There is no specific workaround for REDHAT-BUG-1144293; the best course of action is to apply the necessary updates to LibVNCServer.
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