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AUSCERT Security Bulletin
ASB-2015.0121
ProxySG and ASG Coaching Page Redirect
23 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Blue Coat ProxySG
Blue Coat ASG
Operating System: Network Appliance
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
Member content until: Friday, January 22 2016
OVERVIEW
A low severity vulnerability has been identified in Blue Coat ProxySG
6.5 prior to 6.5.8.8, ProxySG 6.6, and ASG 6.6.
IMPACT
The vendor has provided the following information:
"The URL displayed by ProxySG and ASG in a coaching page may differ
from the actual URL that the user will be directed to after clicking
Accept. A user who clicks on a specially crafted URL can be directed
to an undesired or possibly malicious web site." [1]
MITIGATION
For ProxySG 6.6 and ASG 6.6 there are no fixes available. The vendor
has advised the following:
"Review the categories that are blocked and ensure that users are
not allowed to access content that is undesired and/or dangerous
such as Malware, Phishing, and Botnet." [1]
There is a patch available for Proxy 6.5.8.8. [1]
REFERENCES
[1] SA107: ProxySG and ASG Coaching Page Redirect
https://bto.bluecoat.com/security-advisory/sa107
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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