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Red Hat: RHSA-2019-0059-01 Important: LibVNCServer Code Execution

red hat
Calendar Grey January 15, 2019
Dist Redhat Esm H88
The latest security patch for LibVNCServer on Red Hat Enterprise Linux fixes significant vulnerabilities and enhances overall system security.
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: 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.

Topics%20covered

Topics Covered

security advisory security update Red Hat code execution important heap overflow libvncserver

References

https://access.redhat.com/security/cve/CVE-2018-15127 https://access.redhat.com/security/updates/classification/#important

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

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

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 security update Red Hat code execution important heap overflow libvncserver

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

Bugs Fixed

1661102 - CVE-2018-15127 libvncserver: Heap out-of-bounds write in rfbserver.c in rfbProcessFileTransferReadBuffer() allows for potential code execution

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