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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0134
                  Important: libvncserver security update
                              16 January 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libvncserver
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
                   Red Hat Enterprise Linux WS/Desktop 7
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-15127  

Reference:         ESB-2019.0123
                   ESB-2019.0121
                   ESB-2019.0009

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2019:0059

- --------------------------BEGIN INCLUDED TEXT--------------------

=====================================================================
Red Hat Security Advisory

Synopsis:          Important: libvncserver security update
Advisory ID:       RHSA-2019:0059-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:0059
Issue date:        2019-01-15
CVE Names:         CVE-2018-15127 
=====================================================================

1. Summary:

An update for libvncserver is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) -
aarch64, ppc64le
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional 
(v.7) - aarch64, ppc64le

3. Description:

LibVNCServer is a C library that enables you to implement VNC server
functionality into own programs.

Security Fix(es):

* libvncserver: Heap out-of-bounds write in rfbserver.c in
rfbProcessFileTransferReadBuffer() allows for potential code execution
(CVE-2018-15127)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1661102 - CVE-2018-15127 libvncserver: Heap out-of-bounds write in rfbserver.c
in rfbProcessFileTransferReadBuffer() allows for potential code execution

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
libvncserver-0.9.9-13.el7_6.src.rpm

x86_64:
libvncserver-0.9.9-13.el7_6.i686.rpm
libvncserver-0.9.9-13.el7_6.x86_64.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm
libvncserver-devel-0.9.9-13.el7_6.i686.rpm
libvncserver-devel-0.9.9-13.el7_6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
libvncserver-0.9.9-13.el7_6.src.rpm

ppc64le:
libvncserver-0.9.9-13.el7_6.ppc64le.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.ppc64le.rpm

x86_64:
libvncserver-0.9.9-13.el7_6.i686.rpm
libvncserver-0.9.9-13.el7_6.x86_64.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
libvncserver-0.9.9-13.el7_6.src.rpm

aarch64:
libvncserver-0.9.9-13.el7_6.aarch64.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.aarch64.rpm

ppc64le:
libvncserver-0.9.9-13.el7_6.ppc64le.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.ppc64le.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64le:
libvncserver-debuginfo-0.9.9-13.el7_6.ppc64le.rpm
libvncserver-devel-0.9.9-13.el7_6.ppc64le.rpm

x86_64:
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm
libvncserver-devel-0.9.9-13.el7_6.i686.rpm
libvncserver-devel-0.9.9-13.el7_6.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional 
(v.7):

aarch64:
libvncserver-debuginfo-0.9.9-13.el7_6.aarch64.rpm
libvncserver-devel-0.9.9-13.el7_6.aarch64.rpm

ppc64le:
libvncserver-debuginfo-0.9.9-13.el7_6.ppc64le.rpm
libvncserver-devel-0.9.9-13.el7_6.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
libvncserver-0.9.9-13.el7_6.src.rpm

x86_64:
libvncserver-0.9.9-13.el7_6.i686.rpm
libvncserver-0.9.9-13.el7_6.x86_64.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
libvncserver-debuginfo-0.9.9-13.el7_6.i686.rpm
libvncserver-debuginfo-0.9.9-13.el7_6.x86_64.rpm
libvncserver-devel-0.9.9-13.el7_6.i686.rpm
libvncserver-devel-0.9.9-13.el7_6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-15127
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.

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