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RedHat 7: RHSA-2020-0913-01 Critical: libvncserver Buffer Overflow

red hat
Calendar Grey March 23, 2020
Dist Redhat Esm H88
Important libvncserver patch for CentOS mitigates buffer overflow vulnerabilities and shields against significant risks. Discover further details.
An update for libvncserver is now available for Red Hat Enterprise Linux 7

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 buffer overflow important libvncserver CVE-2019-15690

References

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

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libvncserver-0.9.9-14.el7_7.src.rpm
x86_64: libvncserver-0.9.9-14.el7_7.i686.rpm libvncserver-0.9.9-14.el7_7.x86_64.rpm libvncserver-debuginfo-0.9.9-14.el7_7.i686.rpm libvncserver-debuginfo-0.9.9-14.el7_7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libvncserver-debuginfo-0.9.9-14.el7_7.i686.rpm libvncserver-debuginfo-0.9.9-14.el7_7.x86_64.rpm libvncserver-devel-0.9.9-14.el7_7.i686.rpm libvncserver-devel-0.9.9-14.el7_7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libvncserver-0.9.9-14.el7_7.src.rpm
ppc64le: libvncserver-0.9.9-14.el7_7.ppc64le.rpm libvncserver-debuginfo-0.9.9-14.el7_7.ppc64le.rpm
x86_64: libvncserver-0.9.9-14.el7_7.i686.rpm libvncserver-0.9.9-14.el7_7.x86_64.rpm libvncserver-debuginfo-0.9.9-14.el7_7.i686.rpm libvncserver-debuginfo-0.9.9-14.el7_7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64le: libvncserver-debuginfo-0.9.9-14.el7_7.ppc64le.rpm libvncserver-devel-0.9.9-14.el7_7.ppc64le.rpm
x86_64: libvncserver-debuginfo-0.9.9-14.el7_7.i686.rpm libvncserver-debuginfo-0.9.9-14.el7_7.x86_64.rpm libvncserver-devel-0.9.9-14.el7_7.i686.rpm libvncserver-devel-0.9.9-14.el7_7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: libvncserver-0.9.9-14.el7_7.src.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0913-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0913
Issue date: 2020-03-23

Topic

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 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 buffer overflow important libvncserver CVE-2019-15690

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

Bugs Fixed

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

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