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AUSCERT External Security Bulletin Redistribution
ESB-2015.3055
Cisco SIP Phone 3905 Resource Limitation Denial of Service Vulnerability
8 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unified SIP Phone 3905
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-6391
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2015-2560.html
Comment: AusCERT recommends administrators restrict external network access
and ensure that the device is not internet facing as an interim
solution.
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Cisco SIP Phone 3905 Resource Limitation Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20151202-sip
Published:
2015 December 2 00:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 5.0
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCuh51331
CVE-2015-6391
CWE-119
Summary
A vulnerability in the Cisco Unified SIP Phone 3905 could allow an
unauthenticated, remote attacker to cause a denial of service (DoS) condition
on an affected device.
The vulnerability is due to a resource limitation of the device. An attacker
could exploit this vulnerability by sending large amounts of traffic to the
affected device. An exploit could cause the device to stop functioning
properly, resulting in a DOS condition.
Cisco has not released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151202-sip
Affected Products
Vulnerable Products
Cisco Unified SIP Phone 3905 Series.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Responses archive at http://www.cisco.com/go/psirt and
review subsequent advisories 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.
Exploitation and Public Announcements
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151202-sip
Revision History
Version Description Section Status Date
1.0 Initial public release Final 2015-December-02
Legal Disclaimer
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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