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AUSCERT Security Bulletin
ASB-2012.0154
A vulnerability exists in McAfee Email and Web Security Appliance 5.6
7 November 2012
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AusCERT Security Bulletin Summary
---------------------------------
Product: McAfee Email and Web Security
Operating System: Network Appliance
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2009-0021
Member content until: Friday, December 7 2012
Reference: ESB-2009.0025
OVERVIEW
McAfee have provided a fix for an NTP vulnerability in McAfee Email
and Web Security Appliance 5.6
IMPACT
The vendor have provided the following information:
"CVE-2009-0021 has been reported against Network Time Protocol (NTP)
allows remote attackers to bypass validation of the certificate chain
via a malformed SSL/TLS signature for DSA and ECDSA keys." [1]
MITIGATION
The vendor advises the following options:
"Solution 1
* Always site the Appliance behind an enterprise firewall.
* Configure Secure Shell, User Interface, and Remote Access to restrict
the allowed connections.
* If you have an out-of-band interface, enable it and disable in-band
management.
Solution 2
This issue will be resolved in Email and Web Security 5.6 Patch 5." [1]
REFERENCES
[1] McAfee Appliance: Response to vulnerability CVE-2009-0021
https://kc.mcafee.com/corporate/index?page=content&id=KB76646
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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