Operating System:

[Cisco]

Published:

18 November 2020

Protect yourself against future threats.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2020.4073.2
       Cisco Security Manager Java  Deserialization Vulnerabilities
                             18 November 2020

===========================================================================

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

Product:           Cisco Security Manager
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-27131  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csm-java-rce-mWJEedcD

Revision History:  November 18 2020: Vendor updated the vulnerable products section
                   November 17 2020: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Security Manager Java  Deserialization Vulnerabilities

Priority:        High
Advisory ID:     cisco-sa-csm-java-rce-mWJEedcD
First Published: 2020 November 16 23:00 GMT
Last Updated:    2020 November 17 16:49 GMT
Version 1.1:     Interim
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvu99974 CSCvv79824
CVE Names:       CVE-2020-27131
CWEs:            CWE-20

Summary

  o Multiple vulnerabilities in the Java deserialization function that is used
    by Cisco Security Manager could allow an unauthenticated, remote attacker
    to execute arbitrary commands on an affected device.

    These vulnerabilities are due to insecure deserialization of user-supplied
    content by the affected software. An attacker could exploit these
    vulnerabilities by sending a malicious serialized Java object to a specific
    listener on an affected system. A successful exploit could allow the
    attacker to execute arbitrary commands on the device with the privileges of
    NT AUTHORITY\SYSTEM on the Windows target host.

    Cisco has not released software updates that address these vulnerabilities.
    There are no workarounds that address these vulnerabilities.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-csm-java-rce-mWJEedcD

Affected Products

  o Vulnerable Products

    These vulnerabilities affect Cisco Security Manager releases 4.22 and
    earlier.

    Products Confirmed Not Vulnerable

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

Workarounds

  o There are no workarounds that address these vulnerabilities.

Fixed Software

  o Cisco will release free software updates that address the vulnerabilities
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    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
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Cisco plans to fix these vulnerabilities in Cisco Security Manager Release
    4.23.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is aware of
    public announcements about these vulnerabilities. Cisco PSIRT is not aware
    of malicious use of the vulnerabilities that are described in this
    advisory.

Source

  o Cisco would like to thank Florian Hauser 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.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-csm-java-rce-mWJEedcD

Revision History

  o +---------+-----------------------+---------------+---------+-------------+
    | Version |      Description      |    Section    | Status  |    Date     |
    +---------+-----------------------+---------------+---------+-------------+
    | 1.1     | Updated the           | Vulnerable    | Interim | 2020-NOV-17 |
    |         | vulnerable release.   | Products      |         |             |
    +---------+-----------------------+---------------+---------+-------------+
    | 1.0     | Initial public        | -             | Interim | 2020-NOV-16 |
    |         | release.              |               |         |             |
    +---------+-----------------------+---------------+---------+-------------+

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQIVAwUBX7RnYONLKJtyKPYoAQiq6Q//RtZMT7xWK7P0AAN8LPOzzG3ct+ys6TBT
ROdVQJ5WSh3ZxL6Q4i6ENjCM0E4mVTqaq7DGt48Z60UeEz/uJCRsI4n7oJscsJbk
kU9Zg+lY4HAzvyZphZlqz6ltFF5Jsxb3P/2SI/TCBy+OVXluZz3Cgx6hBlWDe7Rp
3d8LbQ9mRZLQQ7Btg12kd4Sbnx0Wd9kExeU0PjCOyVJ2devnYQ7m5ge9thVLZ2Up
vnRHjEZ2z+F0yPxxRGtBRJXY1M6BNnRYlbwfmm/gbjtE9bS7g5xQuvWoQ64y9sa8
wkz1ywUsSFSUJbCDAiFA03/zMKYP+TGEBJolugUnVI8i5+s7tmKX1NSRH/U/iFcV
I08YAP/KMyu10kwjSG/NYGhLFL32AAk9HrFlsakEilIykacEuHwBfyAxED+cSEcO
HPSoGfgc+meTEWiib75BZzsmPCA0rPdOIVh3iZoFCS0Y1NxkEAsz4/jQQS1esv31
IS9XPBwHi85YjQRzr8KQIxSPVvxlNQBTN3fyhgBfWkb41W39VhnT9JIGW+FIqhvb
H3mDmsLOC5w784CtwEw7wUpm3d6KwzAAHj0qYCh8nlO+ro+OgAYAaUE+CvDi6onH
/STpfXf4lLtcYRYzcGQgd9A7tOuYqiy+DOxAZ6eba2fpeLFaMUxBtlzz7ozTsxXW
RphwYkq8TQo=
=PNe+
-----END PGP SIGNATURE-----