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
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.This vulnerability affects the following Cisco Voice Operating System (VOS)-based products:
This vulnerability also affects the following Cisco products:
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
Administrators can use the UI to determine which Cisco product software release is running:
Administrators can use the UI to determine which Cisco Contact Center platform-based product software release is running:
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:Exploitation of this vulnerability could cause the user to observe the following error in device logs:
Vulmon
./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.
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.
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 Fulfillment Release | First Fixed Release for This 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 Release | First Fixed Release for This 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 Release | First Fixed Release for This Vulnerability |
|---|---|
| Prior to 12.5 |
Vulnerable; migrate to 12.5 |
| 12.5 | 12.5 |
| Prime License Manager Release | First Fixed Release for This Vulnerability |
|---|---|
| Prior to 10.5 |
Vulnerable; migrate to plm_10_5_2 - 10.5.2.13001-11 |
| 10.5 |
plm_10_5_2 - 10.5.2.13001-1 |
| 11.0 | Vulnerable; migrate to 11.5(1)SU5 |
| 11.5 | 11.5(1)SU5 |
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 Release | First Fixed Release for This 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 Presence Service Release | First Fixed Release for This 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
| Unified Contact Center Express Release | First Fixed Release for This 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 Release | First Fixed Release for This 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 Release | First Fixed Release for This Vulnerability |
|---|---|
| Prior to 11.6 |
Vulnerable; migrate to 11.6(1) |
| 11.6 | 11.6(1) |
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.
This vulnerability was found during the resolution of a Cisco TAC support case.
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.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.1 | Updated the Fixed Release table for Prime License Manager. | Fixed Software | Final | 2018-July-02 |
| 1.0 | Initial public release. | - | Final | 2018-June-06 |
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