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AUSCERT External Security Bulletin Redistribution
Cisco WebEx Connect IM Cross-Site Scripting Vulnerability
19 April 2018
AusCERT Security Bulletin Summary
Product: Cisco WebEx Connect IM
Publisher: Cisco Systems
Operating System: Windows XP
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Reduced Security -- Unknown/Unspecified
Resolution: Alternate Program
CVE Names: CVE-2018-0276
Comment: This product has reached end of life and is no longer supported.
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Cisco WebEx Connect IM Cross-Site Scripting Vulnerability
Advisory ID: cisco-sa-20180418-webcon
First Published: 2018 April 18 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi07812
CVSS Score: Base 6.1
o A vulnerability in Cisco WebEx Connect IM could allow an unauthenticated,
remote attacker to conduct a cross-site scripting (XSS) attack against a
user of an affected system.
The vulnerability is due to insufficient input validation of some
parameters that are passed to the web server of the affected system. An
attacker could exploit this vulnerability by convincing a user to follow a
malicious link or by intercepting a user request and injecting malicious
code into the request. A successful exploit could allow the attacker to
execute arbitrary script code in the context of the affected web interface
or allow the attacker to access sensitive browser-based information.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
o Vulnerable Products
This vulnerability affects Cisco WebEx Connect IM. For information about
affected software releases, consult the Cisco bug at the top of this
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
o Cisco WebEx Connect IM has been retired and is no longer supported.
Customers may pursue additional Web Conferencing offerings to meet specific
o There are no workarounds that address this vulnerability.
o For information about fixed software releases, consult the Cisco bug ID(s)
at the top of this advisory.
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
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.
o This vulnerability was reported to Cisco by Chacko K. Abraham and Tilak
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.
Action Links for This Advisory
o Understanding Cross-Site Scripting (XSS) Threat Vectors
Related to This Advisory
o Cross-Site Scripting
| Version | Description | Section | Status | Date |
| 1.0 | Initial public release. | - | Final | 2018-April-18 |
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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