ESB-2017.1840 - [Virtual][Cisco] Cisco Secure Access Control System: Cross-site scripting - Existing account 2017-07-27

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1840
   Cisco Access Control System Stored Cross-Site Scripting Vulnerability
                               27 July 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Secure Access Control System
Publisher:         Cisco Systems
Operating System:  Cisco
                   VMware ESX Server
Impact/Access:     Cross-site Scripting -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-6769  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-acs

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Cisco Security Advisory

Cisco Access Control System Stored Cross-Site Scripting Vulnerability

Medium

Advisory ID:
cisco-sa-20170726-acs

First Published:
2017 July 26 16:00  GMT

Version 1.0:
Final

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCve70587
CVE-2017-6769
CWE-79

CVSS Score:
Base 5.4, Temporal 5.4
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
CVE-2017-6769
CWE-79

Summary

    A vulnerability in the web-based management interface of the Cisco Secure
    Access Control System (ACS) could allow an authenticated, remote attacker
    to conduct a stored cross-site scripting (XSS) attack against a user of the
    web interface of the affected system.

    The vulnerability is due to insufficient input validation of user-supplied
    values and a lack of encoding of user-supplied data. An attacker could
    exploit this vulnerability by convincing a user to click a malicious link.

    Additional information about XSS attacks and potential mitigations can be
    found at the following links:

    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-20170726-acs

Affected Products

    Vulnerable Products

    This vulnerability affects Cisco Secure Access Control System (ACS). 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

    Cisco would like to thank security researcher Mikhail Klyuchnikov from
    Positive Technologies for finding and reporting this vulnerability.

Cisco Security Vulnerability Policy

    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.

Subscribe to Cisco Security Notifications

    Subscribe

URL

    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-acs

Revision History
   
     Version   Description	         Section   Status   Date      
    
     1.0       Initial public release.             Final    2017-July-26   
    
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.

Cisco Security Vulnerability Policy

    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.

Subscribe to Cisco Security Notifications

   Subscribe

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