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Critical Advisory for Red Hat Enterprise Linux 8 on libvncserver Issue

red hat
Calendar Grey March 23, 2020
Dist Redhat Esm H88
Notice about libvncserver classified as critical by Red Hat to address a heap-related buffer overflow vulnerability. Discover further details!
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: HandleCursorShape() integer overflow resulting in heap-based buffer overflow (CVE-2019-15690)
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 red hat security fix important heap overflow libvncserver

References

https://access.redhat.com/security/cve/CVE-2019-15690 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: libvncserver-0.9.11-9.el8_1.2.src.rpm
ppc64le: libvncserver-0.9.11-9.el8_1.2.ppc64le.rpm libvncserver-debuginfo-0.9.11-9.el8_1.2.ppc64le.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.ppc64le.rpm
x86_64: libvncserver-0.9.11-9.el8_1.2.i686.rpm libvncserver-0.9.11-9.el8_1.2.x86_64.rpm libvncserver-debuginfo-0.9.11-9.el8_1.2.i686.rpm libvncserver-debuginfo-0.9.11-9.el8_1.2.x86_64.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.i686.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
Source: libvncserver-0.9.11-9.el8_1.2.src.rpm
aarch64: libvncserver-0.9.11-9.el8_1.2.aarch64.rpm libvncserver-debuginfo-0.9.11-9.el8_1.2.aarch64.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.aarch64.rpm libvncserver-devel-0.9.11-9.el8_1.2.aarch64.rpm
ppc64le: libvncserver-debuginfo-0.9.11-9.el8_1.2.ppc64le.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.ppc64le.rpm libvncserver-devel-0.9.11-9.el8_1.2.ppc64le.rpm
s390x: libvncserver-0.9.11-9.el8_1.2.s390x.rpm libvncserver-debuginfo-0.9.11-9.el8_1.2.s390x.rpm libvncserver-debugsource-0.9.11-9.el8_1.2.s390x.rpm libvncserver-devel-0.9.11-9.el8_1.2.s390x.rpm
x86_64: libvncserver-debuginfo-0.9.11-9.el8_1.2.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0920-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0920
Issue date: 2020-03-23

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 red hat security fix important heap overflow libvncserver

Relevant Releases Architectures

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

Red Hat Enterprise Linux AppStream (v. 8) - ppc64le, x86_64

Bugs Fixed

1811948 - CVE-2019-15690 libvncserver: HandleCursorShape() integer overflow resulting in heap-based buffer overflow

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