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             AUSCERT External Security Bulletin Redistribution

Cisco Adaptive Security Device Manager Remote Code Execution Vulnerability
                               27 July 2021


        AusCERT Security Bulletin Summary

Product:           Cisco Adaptive Security Device Manager
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-1585  

Original Bulletin: 

Revision History:  July 27 2021: Vendor updated vulnerable products section
                   July  8 2021: Initial Release

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Cisco Adaptive Security Device Manager Remote Code Execution Vulnerability

Priority:        Medium
Advisory ID:     cisco-sa-asdm-rce-gqjShXW
First Published: 2021 July 7 16:00 GMT
Last Updated:    2021 July 13 13:02 GMT
Version 1.1:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvw79912
CVE Names:       CVE-2021-1585
CWEs:            CWE-94


  o A vulnerability in the Cisco Adaptive Security Device Manager (ASDM)
    Launcher could allow an unauthenticated, remote attacker to execute
    arbitrary code on a user's operating system.

    This vulnerability is due to a lack of proper signature verification for
    specific code exchanged between the ASDM and the Launcher. An attacker
    could exploit this vulnerability by leveraging a man-in-the-middle position
    on the network to intercept the traffic between the Launcher and the ASDM
    and then inject arbitrary code. A successful exploit could allow the
    attacker to execute arbitrary code on the user's operating system with the
    level of privileges assigned to the ASDM Launcher. A successful exploit may
    require the attacker to perform a social engineering attack to persuade the
    user to initiate communication from the Launcher to the ASDM.

    There are no workarounds that address this vulnerability.

    This advisory is available at the following link:

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco ASDM releases
    7.16(1.150) and earlier.

    See the Details section in the bug ID(s) at the top of this advisory for
    the most complete and current information.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.


  o An attacker could also leverage a man-in-the-middle position to persuade
    the user to retrieve an arbitrary file as part of the communication between
    the Launcher and the ASDM. This secondary drive-by download vulnerability
    has a CVSS score of 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N) and
    is addressed by the bug ID at the top of this advisory.


  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories 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

    Fixed Releases

    For information about fixed software releases, see the Details section in
    the bug ID(s) at the top of this advisory.

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 Cisco would like to thank security researcher Malcolm Lashley for reporting
    these vulnerabilities.

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.


  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asdm-rce-gqjShXW

Revision History

  o +---------+------------------------+---------------+--------+-------------+
    | Version |      Description       |    Section    | Status |    Date     |
    | 1.1     | Updated the vulnerable | Vulnerable    | Final  | 2021-JUL-13 |
    |         | releases.              | Products      |        |             |
    | 1.0     | Initial public         | -             | Final  | 2021-JUL-07 |
    |         | release.               |               |        |             |

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