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