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AUSCERT External Security Bulletin Redistribution
ESB-2017.1947
Cisco Adaptive Security Appliance WebVPN Cross-Site Scripting Vulnerability
7 August 2017
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AusCERT Security Bulletin Summary
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Product: Cisco Adaptive Security Appliance
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6765
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-asa1
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Cisco Adaptive Security Appliance WebVPN Cross-Site Scripting Vulnerability
Medium
Advisory ID: cisco-sa-20170802-asa1
First Published: 2017 August 2 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCve19179
CVSS Score: Base 6.1, Temporal 6.1
CVE-2017-6765
CWE-79
Summary
A vulnerability in the web-based management interface of Cisco Adaptive
Security Appliance (ASA) could allow an unauthenticated, remote attacker to
conduct a cross-site scripting (XSS) attack against a user of the web-based
management interface of an affected device.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface of an affected device. An attacker
could exploit this vulnerability by persuading a user of the interface
to click a crafted link. A successful exploit could allow the attacker
to execute arbitrary script code in the context of the interface or allow
the attacker to access sensitive browser-based information.
Additional information about XSS attacks and potential mitigations can be found at:
https://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20060922-understanding-xss
https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)
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-20170802-asa1
Affected Products
Vulnerable Products
This vulnerability affects Cisco Adaptive Security Appliance (ASA). For
information about affected software releases, consult the Cisco bug ID(s)
at the top of this advisory.
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
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 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.
Source
This vulnerability was found during the resolution of a Cisco TAC support
case.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-asa1
Revision History
Version Description Section Status Date
1.0 Initial public release. -- Final 2017-August-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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