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Red Hat Security Advisory 2020-3385-01

Red Hat Security Advisory 2020-3385-01
Posted Aug 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3385-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2017-18922
SHA-256 | fd4f48df7a85f4ef84e9a1f20f961b4f76aa5b5d13d940a45f63b050a06b3268

Red Hat Security Advisory 2020-3385-01

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

Synopsis: Important: libvncserver security update
Advisory ID: RHSA-2020:3385-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3385
Issue date: 2020-08-10
CVE Names: CVE-2017-18922
====================================================================
1. Summary:

An update for libvncserver is now available for Red Hat Enterprise Linux 8.

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 CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, x86_64

3. Description:

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

Security Fix(es):

* libvncserver: websocket decoding buffer overflow (CVE-2017-18922)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, 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/):

1852356 - CVE-2017-18922 libvncserver: websocket decoding buffer overflow

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
libvncserver-0.9.11-15.el8_2.1.src.rpm

aarch64:
libvncserver-0.9.11-15.el8_2.1.aarch64.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.aarch64.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.aarch64.rpm

ppc64le:
libvncserver-0.9.11-15.el8_2.1.ppc64le.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.ppc64le.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.ppc64le.rpm

x86_64:
libvncserver-0.9.11-15.el8_2.1.i686.rpm
libvncserver-0.9.11-15.el8_2.1.x86_64.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.i686.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.x86_64.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.i686.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

Source:
libvncserver-0.9.11-15.el8_2.1.src.rpm

aarch64:
libvncserver-debuginfo-0.9.11-15.el8_2.1.aarch64.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.aarch64.rpm
libvncserver-devel-0.9.11-15.el8_2.1.aarch64.rpm

ppc64le:
libvncserver-debuginfo-0.9.11-15.el8_2.1.ppc64le.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.ppc64le.rpm
libvncserver-devel-0.9.11-15.el8_2.1.ppc64le.rpm

s390x:
libvncserver-0.9.11-15.el8_2.1.s390x.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.s390x.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.s390x.rpm
libvncserver-devel-0.9.11-15.el8_2.1.s390x.rpm

x86_64:
libvncserver-debuginfo-0.9.11-15.el8_2.1.i686.rpm
libvncserver-debuginfo-0.9.11-15.el8_2.1.x86_64.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.i686.rpm
libvncserver-debugsource-0.9.11-15.el8_2.1.x86_64.rpm
libvncserver-devel-0.9.11-15.el8_2.1.i686.rpm
libvncserver-devel-0.9.11-15.el8_2.1.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-2017-18922
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 2020 Red Hat, Inc.
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