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AUSCERT External Security Bulletin Redistribution
ESB-2015.1405
Cisco IP Phone 7861 Denial of Service Vulnerability
28 May 2015
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AusCERT Security Bulletin Summary
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Product: Cisco IP Phone 7861
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-0751
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=39011
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Vulnerability Alert
Cisco IP Phone 7861 Denial of Service Vulnerability
Threat Type: CWE-399: Resource Management Errors
IntelliShield ID: 39011
Version: 1
First Published: 2015 May 26 18:46 GMT
Last Published: 2015 May 26 18:46 GMT
Port: Not available
CVE: CVE-2015-0751
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 5.4
CVSS Temporal: 4.5
Version Summary: Cisco IP Phone 7861 contains a vulnerability that could allow
an unauthenticated, remote attacker to cause a denial of service condition.
Updates are available.
Description
A vulnerability in the Cisco IP Phone 7861 could allow an unauthenticated,
remote attacker to cause a denial of service (DoS) condition on an affected
device.
The vulnerability is due to improper boundary restrictions when user-supplied
input to the affected application is processed. An unauthenticated, remote
attacker could exploit the vulnerability by sending crafted network packets to
the affected device.javascript:void(0);
Cisco has confirmed the vulnerability and released software updates.
Warning Indicators
At the time this alert was first published, Cisco Unified Communications
Manager 10.3(1) was vulnerable. Later versions of Cisco Unified Communications
Manager may also be vulnerable.
IntelliShield Analysis
To exploit this vulnerability, an attacker may need access to trusted,
internal networks to send crafted network packets to the affected device. This
access requirement may reduce the likelihood of a successful exploit.
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 CSCus81800 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
an affected device to reboot, resulting in a DoS condition.
Technical Information
The vulnerability is due to improper processing of malicious network packets
by an affected device.
An unauthenticated, remote attacker could exploit this vulnerability by
sending crafted network packets to the affected device. A successful exploit
could cause the device to reboot, resulting in a DoS condition.
Safeguards
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Patches/Software
Cisco customers with active contracts can obtain updates through the Software
Center at the following link: Cisco. Cisco customers without contracts can
obtain upgrades by contacting the Cisco Technical Assistance Center at
1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com.
Alert History
Initial Release
Product Sets
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco Cisco Unified Communications Manager 10.3(1) Base
Associated Products:
N/A
Alerts and bulletins on the Cisco Security Intelligence Operations Portal are
highlighted by analysts in the Cisco Threat Operations Center and represent a
subset of the comprehensive content that is available through Cisco Security
IntelliShield Alert Manager Service. This customizable threat and
vulnerability alert service provides security staff with access to timely,
accurate, and credible information about threats and vulnerabilities that may
affect their environment.
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.
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