ESB-2018.1101 - [RedHat] libvncserver: Access confidential data - Existing account 2018-04-11

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

                               ESB-2018.1101
                  Moderate: libvncserver security update
                               11 April 2018

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

        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:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-7225  

Reference:         ESB-2018.1027
                   ESB-2018.0947
                   ESB-2018.0883

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:1055

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

Synopsis:          Moderate: libvncserver security update
Advisory ID:       RHSA-2018:1055-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:1055
Issue date:        2018-04-10
CVE Names:         CVE-2018-7225 
=====================================================================

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 Moderate. 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

3. Description:

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

Security Fix(es):

* libvncserver: Improper input sanitization in
rfbProcessClientNormalMessage in rfbserver.c (CVE-2018-7225)

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/):

1546858 - CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
libvncserver-0.9.9-12.el7_5.src.rpm

x86_64:
libvncserver-0.9.9-12.el7_5.i686.rpm
libvncserver-0.9.9-12.el7_5.x86_64.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm

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

x86_64:
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm
libvncserver-devel-0.9.9-12.el7_5.i686.rpm
libvncserver-devel-0.9.9-12.el7_5.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
libvncserver-0.9.9-12.el7_5.src.rpm

ppc64le:
libvncserver-0.9.9-12.el7_5.ppc64le.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.ppc64le.rpm

x86_64:
libvncserver-0.9.9-12.el7_5.i686.rpm
libvncserver-0.9.9-12.el7_5.x86_64.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm

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

ppc64le:
libvncserver-debuginfo-0.9.9-12.el7_5.ppc64le.rpm
libvncserver-devel-0.9.9-12.el7_5.ppc64le.rpm

x86_64:
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm
libvncserver-devel-0.9.9-12.el7_5.i686.rpm
libvncserver-devel-0.9.9-12.el7_5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
libvncserver-0.9.9-12.el7_5.src.rpm

x86_64:
libvncserver-0.9.9-12.el7_5.i686.rpm
libvncserver-0.9.9-12.el7_5.x86_64.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm

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

x86_64:
libvncserver-debuginfo-0.9.9-12.el7_5.i686.rpm
libvncserver-debuginfo-0.9.9-12.el7_5.x86_64.rpm
libvncserver-devel-0.9.9-12.el7_5.i686.rpm
libvncserver-devel-0.9.9-12.el7_5.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-2018-7225
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2018 Red Hat, Inc.
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