|Category:||Red Hat Local Security Checks|
|Title:||RedHat Update for libvncserver RHSA-2014:1826-01|
|Summary:||The remote host is missing an update for the 'libvncserver'; package(s) announced via the referenced advisory.|
The remote host is missing an update for the 'libvncserver'
package(s) announced via the referenced advisory.
LibVNCServer is a library that allows for easy creation of VNC server or
An integer overflow flaw, leading to a heap-based buffer overflow, was
found in the way screen sizes were handled by LibVNCServer. A malicious VNC
server could use this flaw to cause a client to crash or, potentially,
execute arbitrary code in the client. (CVE-2014-6051)
A NULL pointer dereference flaw was found in LibVNCServer's framebuffer
setup. A malicious VNC server could use this flaw to cause a VNC client to
A NULL pointer dereference flaw was found in the way LibVNCServer handled
certain ClientCutText message. A remote attacker could use this flaw to
crash the VNC server by sending a specially crafted ClientCutText message
from a VNC client. (CVE-2014-6053)
A divide-by-zero flaw was found in the way LibVNCServer handled the scaling
factor when it was set to '0'. A remote attacker could use this flaw to
crash the VNC server using a malicious VNC client. (CVE-2014-6054)
Two stack-based buffer overflow flaws were found in the way LibVNCServer
handled file transfers. A remote attacker could use this flaw to crash the
VNC server using a malicious VNC client. (CVE-2014-6055)
Red Hat would like to thank oCERT for reporting these issues. oCERT
acknowledges Nicolas Ruff as the original reporter.
All libvncserver users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. All running
applications linked against libvncserver must be restarted for this update
to take effect.
libvncserver on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Server (v. 7),
Red Hat Enterprise Linux Workstation (v. 6)
Please Install the Updated Packages.
Common Vulnerability Exposure (CVE) ID: CVE-2014-6051|
BugTraq ID: 70093
Debian Security Information: DSA-3081 (Google Search)
RedHat Security Advisories: RHSA-2015:0113
SuSE Security Announcement: openSUSE-SU-2015:2207 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2014-6052
BugTraq ID: 70091
Common Vulnerability Exposure (CVE) ID: CVE-2014-6053
Common Vulnerability Exposure (CVE) ID: CVE-2014-6054
BugTraq ID: 70094
Common Vulnerability Exposure (CVE) ID: CVE-2014-6055
BugTraq ID: 70096
XForce ISS Database: libvncserver-cve20146055-bo(96187)
|Copyright||Copyright (C) 2014 Greenbone Networks GmbH|
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