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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0251
            Cisco Umbrella Dashboard Packet Flood Vulnerability
                              21 January 2021

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

Product:           Cisco Umbrella Dashboard
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Reduced Security -- Remote/Unauthenticated
Resolution:        None
CVE Names:         CVE-2021-1350  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umb-dos-dgKzDEBP

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

Cisco Umbrella Dashboard Packet Flood Vulnerability

Priority:        Medium
Advisory ID:     cisco-sa-umb-dos-dgKzDEBP
First Published: 2021 January 20 16:00 GMT
Version 1.0:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvw61612
CVE Names:       CVE-2021-1350
CWEs:            CWE-770

Summary

  o A vulnerability in the web UI of Cisco Umbrella could allow an
    unauthenticated, remote attacker to negatively affect the performance of
    this service.

    The vulnerability exists due to insufficient rate limiting controls in the
    web UI. An attacker could exploit this vulnerability by sending crafted
    HTTPS packets at a high and sustained rate. A successful exploit could
    allow the attacker to negatively affect the performance of the web UI.

    Cisco has addressed this vulnerability. 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-umb-dos-dgKzDEBP

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco Umbrella, which is cloud based. No user
    action is required.
   
    Products Confirmed Not Vulnerable

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

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has addressed this vulnerability in Cisco Umbrella Dashboard, which
    is cloud based. No user action is required.

    Customers who need additional information are advised to contact Cisco
    Umbrella Support at umbrella-support@cisco.com or their contracted
    maintenance providers.

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.

Source

  o Cisco would like to thank Abhinav Khanna of eSec Forte Technologies for
    reporting this vulnerability.

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-umb-dos-dgKzDEBP

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2021-JAN-20  |
    +----------+---------------------------+----------+--------+--------------+

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