Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2015.2359
Cisco Security Management Appliance Log Rollover Denial of
Service Vulnerability
9 September 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Security Management Appliance
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-6288
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=40847
- --------------------------BEGIN INCLUDED TEXT--------------------
Vulnerability Alert
Cisco Security Management Appliance Log Rollover Denial of Service
Vulnerability
Threat Type: CWE-399: Resource Management Errors
IntelliShield ID: 40847
Version: 1
First Published: 2015 September 08 18:52 GMT
Last Published: 2015 September 08 18:52 GMT
Port: Not available
CVE: CVE-2015-6288
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 5.0
CVSS Temporal: 4.8
Version Summary:
Cisco Security Management Appliance contains a vulnerability that could
allow an unauthenticated, remote attacker to cause a denial of service
condition on a targeted device. Updates are not available.
Description
A vulnerability in the web interface of the Cisco Security Management
Appliance (SMA) could allow an unauthenticated, remote attacker to cause
a denial of service (DoS) condition on a targeted device.
The vulnerability is due to inadequate validation of user credentials
for incoming HTTP requests, which can cause the device to manipulate an
internal log file. An attacker could exploit this vulnerability by sending
crafted HTTP requests to the device. A successful exploit could allow
the attacker to cause a DoS condition due to an application fault. The
application fault is caused when the log file wraps quickly.
Cisco has confirmed the vulnerability; however, software updates are
not available.
Warning Indicators
At the time this alert was first published, Cisco Content Security
Management Appliance version 7.8.0-000 was affected. Later versions may
also be affected.
IntelliShield Analysis
To exploit the vulnerability, the attacker would need to send crafted HTTP
requests to the targeted system through the SMA web interface. Because the
attacker does not need to authenticate to send the crafted HTTP requests,
the likelihood of a DoS condition is increased.
Cisco indicates through the CVSS score that functional exploit code exists;
however, the code is not known to be publicly available.
Vendor Announcements
Cisco has released bug ID CSCuw09620 for registered users, which contains
additional details and an up-to-date list of affected product versions.
Impact
An unauthenticated, remote attacker could exploit this vulnerability to
cause a DoS condition on the targeted device.
Technical Information
The vulnerability is due to improper validation of user credentials for
incoming HTTP requests.
An attacker could exploit this vulnerability by sending a crafted HTTP
request to the targeted device, causing a DoS condition when a log file
wraps quickly.
Safeguards
Administrators may consider using IP-based access control lists (ACLs)
to allow only trusted systems to access the affected systems.
Administrators are advised to implement physical security for production
servers.
Administrators are advised to contact the vendor regarding future updates
and releases.
Patches/Software
Updates are not available.
Alert History
Initial Release
Product Sets
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco Cisco Content Security Management Appliance (SMA) 7.8 Base
Associated Products:
N/A
LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to
individual users; users may value alerts differently based upon their
network configurations and circumstances. THE ALERT, AND INFORMATION
CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY
KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION
CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN
RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON
OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT
NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. 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.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=7TmX
-----END PGP SIGNATURE-----