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AUSCERT External Security Bulletin Redistribution
ESB-2020.0883
novnc security update
12 March 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: novnc
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-18635
Reference: ESB-2019.3736
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0754
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Red Hat Security Advisory
Synopsis: Moderate: novnc security update
Advisory ID: RHSA-2020:0754-01
Product: Red Hat OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0754
Issue date: 2020-03-10
CVE Names: CVE-2017-18635
=====================================================================
1. Summary:
An updated novnc package that fixes one security issue is now available for
Red Hat Enterprise Linux OpenStack Platform 13.0.
Red Hat Product Security has rated this update as having Moderate security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.
2. Relevant releases/architectures:
Red Hat OpenStack Platform 13.0 - noarch
Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server - noarch
3. Description:
The novnc package provides a VNC client that uses HTML5 (Web Sockets,
Canvas) and includes encryption support.
An XSS vulnerability was discovered in noVNC in which arbitrary HTML could
be injected into the noVNC web page. An attacker having access to a VNC
server could use target host values in a crafted URL to gain access to
secure information (such as VM tokens). (CVE-2017-18635)
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:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1484711 - [OSP13] rebase novnc to 1.1.0
1765660 - CVE-2017-18635 novnc: XSS vulnerability via the messages propagated to the status field
6. Package List:
Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server:
Source:
novnc-1.1.0-2.el7ost.src.rpm
noarch:
novnc-1.1.0-2.el7ost.noarch.rpm
Red Hat OpenStack Platform 13.0:
Source:
novnc-1.1.0-2.el7ost.src.rpm
noarch:
novnc-1.1.0-2.el7ost.noarch.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-2017-18635
https://access.redhat.com/security/updates/classification/#moderate
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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