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AUSCERT External Security Bulletin Redistribution
ESB-2013.1488
Cisco Unity Connection Directory Traversal Vulnerability
21 October 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unity Connection
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Create Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-5534
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5534
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Cisco Security Notice
Cisco Unity Connection Directory Traversal Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5534
CVE ID: CVE-2013-5534
Release Date: 2013 October 17 19:34 UTC (GMT)
Last Updated: 2013 October 18 14:38 UTC (GMT)
Related Documents:
Summary
A vulnerability in the attachment service of Cisco Unity Connection, known as
Cisco Unity Web Service or as Voice Message Web Service (VMWS), could allow an
authenticated, remote attacker to place files in arbitrary locations on an
affected device.
The vulnerability is due to a failure to properly sanitize user-supplied input
provided as part of a file name to the VMWS attachment service. An attacker
could exploit this vulnerability by supplying the path to the desired file
location utilizing directory traversal characters. An exploit could allow the
temporary placement of an attacker-controlled file into any location writeable
by the Apache Tomcat service.
When files are uploaded, the VMWS Attachment service validates the supplied
file and immediately removes the file if it is not determined to be an audio
file. This creates a short window that could be used to access the
attacker-controlled file. If placed in the proper location on the device, an
extended impact of this vulnerability could allow the attacker to execute
arbitrary Java Server Pages (JSP) code within the context of Apache Tomcat.
Cisco would like to thank Emerging Defense, LLC for reporting this
vulnerability.
Affected Products
Product More Information CVSS
Cisco Unity Connection CSCuj22948 4.0/3.3
What Is a Cisco Security Notice?
The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco
Security Notices to inform customers of low- to mid-level severity security
issues involving Cisco products.
Customers who wish to upgrade to a software version that includes fixes for
these issues should contact their normal support channels. Free software
updates will not be provided for issues that are disclosed through a Cisco
Security Notice.
For additional information about Cisco PSIRT publications, see the Cisco
Security Vulnerability Policy at
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
Customers Using Third-Party Support Organizations
Customers may have Cisco products that are provided or maintained through
prior or existing agreements with third-party support organizations, such as
Cisco Partners, authorized resellers, or service providers. For these
products, customers should consult their service providers or support
organizations to ensure that any applied workaround or fix is the most
appropriate in the intended network before it is deployed.
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 stand-alone 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.
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