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AUSCERT External Security Bulletin Redistribution
ESB-2018.1702
Multiple Cisco Products Disk Utilization Denial of Service Vulnerability
7 June 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Multiple Cisco Products
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6779
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos
- --------------------------BEGIN INCLUDED TEXT--------------------
Multiple Cisco Products Disk Utilization Denial of Service Vulnerability
High
Advisory ID: cisco-sa-20180606-diskdos
First Published: 2018 June 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvd10872
CSCvf64322
CSCvf64332
CSCvi29538
CSCvi29543
CSCvi29544
CSCvi29546
CSCvi29556
CSCvi29571
CSCvi31738
CSCvi31741
CSCvi31762
CSCvi31807
CSCvi31818
CSCvi31823
CVSS Score: Base 8.6
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
CVE-2017-6779
CWE-399
Summary
o Multiple Cisco products are affected by a vulnerability in local file
management for certain system log files of Cisco collaboration products
that could allow an unauthenticated, remote attacker to cause high disk
utilization, resulting in a denial of service (DoS) condition.
The vulnerability occurs because a certain system log file does not have a
maximum size restriction. Therefore, the file is allowed to consume the
majority of available disk space on the appliance. An attacker could
exploit this vulnerability by sending crafted remote connection requests to
the appliance. Successful exploitation could allow the attacker to increase
the size of a system log file so that it consumes most of the disk space.
The lack of available disk space could lead to a DoS condition in which the
application functions could operate abnormally, making the appliance
unstable.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco Voice Operating System (VOS)
-based products:
o Emergency Responder
o Finesse
o Hosted Collaboration Mediation Fulfillment
o MediaSense
o Prime License Manager
o SocialMiner
o Unified Communications Manager (UCM)
o Unified Communications Manager IM and Presence Service (IM&P); earlier
releases were known as Cisco Unified Presence
o Unified Communication Manager Session Management Edition (SME)
o Unified Contact Center Express (UCCx)
o Unified Intelligence Center (UIC)
o Unity Connection
o Virtualized Voice Browser
This vulnerability also affects the following Cisco products:
o Prime Collaboration Assurance
o Prime Collaboration Provisioning
Determining the Current Software Release from the CLI
To determine which software release is running on a platform,
administrators can issue the show version active command in the CLI.
In the following example, the software release is 11.5.1.10000-86:
ciscocm: show version active
Active Master Version: 11.5.1.10000-86
Determining the Current Software Release for the Cisco Unified or Contact
Center Platform
Administrators can use the UI to determine which Cisco product software
release is running:
1. Log in to the web-based interface
2. Choose Help > About to view the system software release
Administrators can use the UI to determine which Cisco Contact Center
platform-based product software release is running:
1. Log in to the Cisco Contact Center Express server
2. Go to the Cisco Unified Communications operating system administration
window
3. Choose Show > Software
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
o Identity Service (IdS) 11.5 and 11.6
o Prime Collaboration Deployment
Indicators of Compromise
o Exploitation of this vulnerability could cause the user to observe the
following error in device logs:
./hssi_defines.sh: line ###: echo: write error: No space left on device
Administrators who observe this error are advised to contact the Cisco
Technical Assistance Center (TAC) to determine whether the device has been
compromised by exploitation of this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page, to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Emergency Responder: CSCvf64322
The Emergency Responder Software can be downloaded from the Software Center
on Cisco.com by navigating to Products > Unified Communications > Telephony
Extensions > Emergency Responder.
+-----------------------------+-------------------------------------------+
| Emergency Responder Release | First Fixed Release for This |
| | Vulnerability |
+-----------------------------+-------------------------------------------+
| Prior to 10.5 | Vulnerable; migrate to 10.5(1a) |
+-----------------------------+-------------------------------------------+
| 10.5 | 10.5(1a) (future release)^1 |
+-----------------------------+-------------------------------------------+
| 11.0 | Vulnerable; migrate to 11.5(4) |
+-----------------------------+-------------------------------------------+
| 11.5 | 11.5(4) |
+-----------------------------+-------------------------------------------+
| 12.0 | 12.0SU1 |
+-----------------------------+-------------------------------------------+
^1The COP file ciscocm.cer_CSCvf64322.cop.sgn is available from the
Software Center on Cisco.com.
Finesse: CSCvi29556
The Finesse Software can be downloaded from the Software Center on
Cisco.com by navigating to Products > Customer Collaboration > Options for
Contact Center Solutions > Finesse > Finesse Software.
+--------------------+----------------------------------------------------+
| Finesse Release | First Fixed Release for This Vulnerability |
+--------------------+----------------------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11.6(1) |
+--------------------+----------------------------------------------------+
| 11.6 | 11.6(1) |
+--------------------+----------------------------------------------------+
Hosted Collaboration Mediation Fulfillment: CSCvi31738
The Hosted Collaboration Mediation Fulfillment Software can be downloaded
from the Software Center on Cisco.com by navigating to Products > Unified
Communications > Call Control > Hosted Collaboration > Hosted Collaboration
Solution (HCS).
+---------------------------------------+---------------------------------+
| Hosted Collaboration Mediation | First Fixed Release for This |
| Fulfillment Release | Vulnerability |
+---------------------------------------+---------------------------------+
| Prior to 11.5 | Vulnerable; migrate to 11.5(3) |
+---------------------------------------+---------------------------------+
| 11.5 | 11.5(3) |
+---------------------------------------+---------------------------------+
MediaSense: CSCvi29546
The MediaSense Software can be downloaded from the Software Center on
Cisco.com by navigating to Products > Customer Collaboration > Options for
Contact Center Solutions > MediaSense > MediaSense Software.
+----------------------+--------------------------------------------------+
| MediaSense Release | First Fixed Release for This Vulnerability |
+----------------------+--------------------------------------------------+
| Prior to 11.5 | Vulnerable; migrate to 11.5SU2 |
+----------------------+--------------------------------------------------+
| 11.5 | 11.5SU2 |
+----------------------+--------------------------------------------------+
Prime Collaboration Assurance: CSCvi31818
The Prime Collaboration Assurance Software can be downloaded from the
Software Center on Cisco.com by navigating to Products > Cloud and Systems
Management > Collaboration and Unified Communications Management > Prime
Collaboration.
+---------------------------------+---------------------------------------+
| Prime Collaboration Assurance | First Fixed Release for This |
| Release | Vulnerability |
+---------------------------------+---------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11.6 ES16 |
+---------------------------------+---------------------------------------+
| 11.6 | 11.6 ES16 |
+---------------------------------+---------------------------------------+
| 12.1 | 12.1 ES2 |
+---------------------------------+---------------------------------------+
Prime Collaboration Provisioning: CSCvi31741
The Prime Collaboration Provisioning Software can be downloaded from the
Software Center on Cisco.com by navigating to Products > Cloud and Systems
Management > Collaboration and Unified Communications Management > Prime
Collaboration.
+-----------------------------------+-------------------------------------+
| Prime Collaboration Provisioning | First Fixed Release for This |
| Release | Vulnerability |
+-----------------------------------+-------------------------------------+
| Prior to 12.5 | Vulnerable; migrate to 12.5 |
+-----------------------------------+-------------------------------------+
| 12.5 | 12.5 |
+-----------------------------------+-------------------------------------+
Prime License Manager: CSCvi31807
The Prime License Manager Software can be downloaded from the Software
Center on Cisco.com by navigating to Products > Unified Communications >
Unified Communications Management > Prime License Manager > Prime License
Manager Software Updates.
+--------------------------+----------------------------------------------+
| Prime License Manager | First Fixed Release for This Vulnerability |
| Release | |
+--------------------------+----------------------------------------------+
| Prior to 10.5 | Vulnerable; migrate to plm_10_5_2 - |
| | 10.5.2.13001-1^1 |
+--------------------------+----------------------------------------------+
| 10.5 | plm_10_5_2 - 10.5.2.13001-1 |
+--------------------------+----------------------------------------------+
| 11.0 | Vulnerable; migrate to plm_11_5_1 - |
| | 11.5.1.13001-1^1 |
+--------------------------+----------------------------------------------+
| 11.5 | plm_11_5_1 - 11.5.1.13001-1 |
+--------------------------+----------------------------------------------+
^1These Engineering Specials (ES) must be requested via the Cisco TAC.
SocialMiner: CSCvi29544
The SocialMiner Software can be downloaded from the Software Center on
Cisco.com by navigating to Products > Customer Collaboration > Options for
Contact Center Solutions > SocialMiner > SocialMiner Software.
+-----------------------+-------------------------------------------------+
| SocialMiner Release | First Fixed Release for This Vulnerability |
+-----------------------+-------------------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11.6.1 |
+-----------------------+-------------------------------------------------+
| 11.6 | 11.6.1 |
+-----------------------+-------------------------------------------------+
Unified Communications Manager and Unified Communication Manager Session
Management Edition: CSCvd10872
The Unified Communications Manager Software can be downloaded from the
Software Center on Cisco.com by navigating to Products > Unified
Communications > Call Control > Unified Communications Manager
(CallManager).
+----------------------------------+--------------------------------------+
| Unified Communications Manager | First Fixed Release for This |
| Release | Vulnerability |
+----------------------------------+--------------------------------------+
| Prior to 10.0 | Vulnerable; migrate to 10.5(2)SU5 or |
| | later |
+----------------------------------+--------------------------------------+
| 10.0 | Vulnerable; migrate to 10.5(2)SU5 or |
| | later |
+----------------------------------+--------------------------------------+
| 10.5 | 10.5(2)SU5 |
+----------------------------------+--------------------------------------+
| 11.0 | 11.0(1a)SU4 |
+----------------------------------+--------------------------------------+
| 11.5 | 11.5(1)SU3 |
+----------------------------------+--------------------------------------+
| 12.0 | Not vulnerable |
+----------------------------------+--------------------------------------+
Unified Communications Manager IM and Presence Service: CSCvi29543
The Unified Communications Manager IM and Presence Service Software can be
downloaded from the Software Center on Cisco.com by navigating to Products
> Unified Communications > Unified Communications Applications > Presence
Software > Unified Communications Manager IM & Presence Service.
+------------------------------------------+------------------------------+
| Unified Communications Manager IM and | First Fixed Release for This |
| Presence Service Release | Vulnerability |
+------------------------------------------+------------------------------+
| Prior to 10.5 | Vulnerable; migrate to |
| | 10.5.2 SU4 |
+------------------------------------------+------------------------------+
| 10.5 | 10.5.2SU4 |
+------------------------------------------+------------------------------+
| 11.0 | Vulnerable; migrate to 11.5 |
| | (1)SU4 |
+------------------------------------------+------------------------------+
| 11.5 | 11.5(1)SU4 |
+------------------------------------------+------------------------------+
Unified Contact Center Express: CSCvi29538
The Unified Contact Center Express Software can be downloaded from the
Software Center on Cisco.com by navigating to Products > Customer
Collaboration > Options for Contact Center Solutions > Unified IP
Interactive Voice Response (IVR).
+----------------------------------+--------------------------------------+
| Unified Contact Center Express | First Fixed Release for This |
| Release | Vulnerability |
+----------------------------------+--------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11.6(1) |
+----------------------------------+--------------------------------------+
| 11.6 | 11.6(1) |
+----------------------------------+--------------------------------------+
Unified Intelligence Center: CSCvi29571
The Unified Intelligence Center Software can be downloaded from the
Software Center on Cisco.com by navigating to Products > Customer
Collaboration > Options for Contact Center Solutions > Unified Intelligence
Center > Unified Intelligence Center Software.
+---------------------------------+---------------------------------------+
| Unified Intelligence Center | First Fixed Release for This |
| Release | Vulnerability |
+---------------------------------+---------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11(6).1 |
+---------------------------------+---------------------------------------+
| 11.6 | 11.6(1) |
+---------------------------------+---------------------------------------+
Unity Connection: CSCvf64332
The Unity Connection Software can be downloaded from the Software Center on
Cisco.com by navigating to Products > Unified Communications > Unified
Communications Applications > Messaging > Unity Connection.
+--------------------------+----------------------------------------------+
| Unity Connection Release | First Fixed Release for This Vulnerability |
+--------------------------+----------------------------------------------+
| Prior to 10.5 | Vulnerable; migrate to 10.5SU5 |
+--------------------------+----------------------------------------------+
| 10.5 | 10.5SU5 |
+--------------------------+----------------------------------------------+
| 11.0 | Vulnerable; migrate to 11.5(1)SU3 |
+--------------------------+----------------------------------------------+
| 11.5 | 11.5.1SU3 |
+--------------------------+----------------------------------------------+
| 12.0 | Not vulnerable |
+--------------------------+----------------------------------------------+
Virtualized Voice Browser: CSCvi31823
The Virtualized Voice Browser Software can be downloaded from the Software
Center on Cisco.com by navigating to Products > Customer Collaboration >
Options for Contact Center Solutions > Virtualized Voice Browser.
+--------------------------------+----------------------------------------+
| Virtualized Voice Browser | First Fixed Release for This |
| Release | Vulnerability |
+--------------------------------+----------------------------------------+
| Prior to 11.6 | Vulnerable; migrate to 11.6(1) |
+--------------------------------+----------------------------------------+
| 11.6 | 11.6(1) |
+--------------------------------+----------------------------------------+
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during the resolution of a Cisco TAC support
case.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
o Subscribe
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-diskdos
Revision History
o +---------+---------------------------+---------+--------+---------------+
| Version | Description | Section | Status | Date |
+---------+---------------------------+---------+--------+---------------+
| 1.0 | Initial public release. | -- | Final | 2018-June-06 |
+---------+---------------------------+---------+--------+---------------+
Legal Disclaimer
o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
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