ESB-2018.2672 - [Cisco] Cisco Secure Access Control Server: Access confidential data - Existing account 2018-09-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2672
          Cisco Secure Access Control Server XML External Entity
                          Injection Vulnerability
                             7 September 2018

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

Product:           Cisco Secure Access Control Server
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0414  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-acsxxe

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Cisco Security

Cisco Secure Access Control Server XML External Entity Injection Vulnerability

Priority:	  Medium
Advisory ID:	  cisco-sa-20180905-acsxxe
First Published:  2018 September 5 16:00 GMT
Version 1.0:	  Final
Workarounds:	  No workarounds available
Cisco Bug IDs:	  CSCvi85318
 
CVE-2018-0414
CWE-611
 
CVSS Score: Base 6.5
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X

Summary

    A vulnerability in the web-based UI of Cisco Secure Access Control Server
    could allow an authenticated, remote attacker to gain read access to
    certain information in an affected system.

    The vulnerability is due to improper handling of XML External Entities
    (XXEs) when parsing an XML file. An attacker could exploit this
    vulnerability by convincing the administrator of an affected system to
    import a crafted XML file.

    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-20180905-acsxxe

Affected Products

  * Vulnerable Products

    At the time of publication, Cisco Secure Access Control Server Release 5.8
    patch 10 contained the fix for this vulnerability.

    For the latest and most detailed information about affected and fixed
    software releases, consult the Cisco bug ID(s) at the top of this advisory.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are 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 Piotr Domirski 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-20180905-acsxxe

Revision History

    +----------------------------------------------------------------------------+
    | Version |       Description        | Section | Status |        Date        |
    |---------+--------------------------+---------+--------+--------------------|
    | 1.0     | Initial public release.  | ?       | Final  | 2018-September-05  |
    +----------------------------------------------------------------------------+

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