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Red Hat Enterprise Linux 8: RHSA-2020-3385-01 Critical LibVNCServer Bug Fix

red hat
Calendar Grey August 10, 2020
Dist Redhat Esm H88
An essential libvncserver enhancement for Red Hat Enterprise Linux 8 has been released, addressing significant buffer overflow vulnerabilities.
An update for libvncserver is now available for Red Hat Enterprise Linux 8

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

Summary

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.

Topics%20covered

Topics Covered

security advisory update buffer overflow red hat security fix important libvncserver

References

https://access.redhat.com/security/cve/CVE-2017-18922 https://access.redhat.com/security/updates/classification#important

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

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

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory update buffer overflow red hat security fix important libvncserver

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

Bugs Fixed

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

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