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Red Hat: RHSA-2015:0788-01 Moderate: noVNC Session Hijacking Risk

red hat
Calendar Grey April 7, 2015
Dist Redhat Esm H88
A new version of the novnc package has been released for Red Hat 6.0 to mitigate a significant security vulnerability linked to potential session hijacking threats.
An updated novnc package that fixes one security issue is now available for Red Hat Enterprise Linux OpenStack Platform 6.0

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

Summary

The novnc package provides a VNC client that uses HTML5 (Web Sockets, Canvas) and includes encryption support.
It was discovered that noVNC did not properly set the 'secure' flag when issuing cookies. An attacker could use this flaw to intercept cookies via a man-in-the-middle attack. (CVE-2013-7436)
All novnc users are advised to upgrade to this updated package, which corrects this issue.

Topics%20covered

Topics Covered

security advisory moderate security issue red hat session hijack novnc

References

https://access.redhat.com/security/cve/CVE-2013-7436 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7:
Source: novnc-0.5.1-2.el7ost.src.rpm
noarch: novnc-0.5.1-2.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:0788-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2015:0788.html
Issue date: 2015-04-07

Topic

An updated novnc package that fixes one security issue is now available forRed Hat Enterprise Linux OpenStack Platform 6.0.Red Hat Product Security has rated this update as having Moderate securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory moderate security issue red hat session hijack novnc

Relevant Releases Architectures

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7 - noarch

Bugs Fixed

1193451 - CVE-2013-7436 novnc: session hijack through insecurely set session token cookies

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