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Sicherheit: Preisgabe von Informationen in novnc
Aktuelle Meldungen Distributionen
Name: Preisgabe von Informationen in novnc
ID: RHSA-2015:0884-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux OpenStack Platform
Datum: Do, 23. April 2015, 21:43
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7436

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: novnc security update
Advisory ID: RHSA-2015:0884-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0884.html
Issue date: 2015-04-23
CVE Names: CVE-2013-7436
=====================================================================

1. Summary:

An updated novnc package that fixes one security issue is now available for
Red Hat Enterprise Linux OpenStack Platform 4.0.

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 Enterprise Linux OpenStack Platform 4.0 - noarch

3. Description:

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.

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/):

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

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 4.0:

Source:
novnc-0.5.1-2.el6ost.src.rpm

noarch:
novnc-0.5.1-2.el6ost.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-2013-7436
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 2015 Red Hat, Inc.
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