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AUSCERT External Security Bulletin Redistribution
ESB-2020.2682
Cisco Webex Meetings
6 August 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Webex Meetings
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Access Confidential Data -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3472 CVE-2020-3463 CVE-2020-3413
CVE-2020-3412
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-mttngs-xss-3VbdxDuF
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-smtcreate-YmuD5Sk
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-smtdelete-gJDurOgR
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-mAkmV4qc
Comment: This bulletin contains four (4) security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Webex Meetings Reflected Cross-Site Scripting Vulnerability
Priority: Medium
Advisory ID: cisco-sa-webex-mttngs-xss-3VbdxDuF
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvu05825
CVE-2020-3463
CWE-79
Summary
o A vulnerability in the web-based management interface of Cisco Webex
Meetings could allow an unauthenticated, remote attacker to conduct a
cross-site scripting (XSS) attack against a user of the web-based
management interface of the affected service.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface of the affected service. An attacker
could exploit this vulnerability by persuading a user to click a malicious
link. A successful exploit could allow the attacker to execute arbitrary
script code in the context of the affected interface or access sensitive,
browser-based information.
Cisco has released software updates that address 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-webex-mttngs-xss-3VbdxDuF
Affected Products
o Vulnerable Products
This vulnerability affects releases earlier than Release T40.6.0 of Cisco
Webex Meetings, which is cloud based.
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 releases T40.6.0 and later of
Cisco Webex Meetings, which is cloud based. No user action is required.
Customers can determine the current remediation status or software version
by using the Help function in the service GUI.
Customers who need additional information are advised to contact the Cisco
Technical Assistance Center (TAC) 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 the security researcher Prasenjit Kanti Paul 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-webex-mttngs-xss-3VbdxDuF
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
+----------+---------------------------+----------+--------+--------------+
- ---------------------------------------------------------------------------------
Cisco Webex Meetings Scheduled Meeting Template Creation Vulnerability
Priority: Medium
Advisory ID: cisco-sa-webex-smtcreate-YmuD5Sk
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvu45984
CVE-2020-3412
CWE-284
Summary
o A vulnerability in the scheduled meeting template feature of Cisco Webex
Meetings could allow an authenticated, remote attacker to create a
scheduled meeting template that would belong to another user in their
organization.
The vulnerability is due to insufficient authorization enforcement for the
creation of scheduled meeting templates. An attacker could exploit this
vulnerability by sending a crafted request to the Webex Meetings interface
to create a scheduled meeting template. A successful exploit could allow
the attacker to create a scheduled meeting template that would belong to a
user other than themselves.
Cisco has released software updates that address 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-webex-smtcreate-YmuD5Sk
Affected Products
o Vulnerable Products
This vulnerability affects releases earlier than Release 40.7.0 of Cisco
Webex Meetings, which is cloud based.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Webex
Meetings Server.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has addressed this vulnerability in releases 40.7.0 and later of
Cisco Webex Meetings, which is cloud based. No user action is required.
Customers can determine the current remediation status or software version
by using the Help function in the service GUI.
Customers who need additional information are advised to contact the Cisco
Technical Assistance Center (TAC) 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 Bharath Ravilla of Isecurion 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-webex-smtcreate-YmuD5Sk
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Webex Meetings Scheduled Meeting Template Deletion Vulnerability
Priority: Medium
Advisory ID: cisco-sa-webex-smtdelete-gJDurOgR
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvu37155
CVE-2020-3413
CWE-284
Summary
o A vulnerability in the scheduled meeting template feature of Cisco Webex
Meetings could allow an authenticated, remote attacker to delete a
scheduled meeting template that belongs to another user in their
organization.
The vulnerability is due to insufficient authorization enforcement for
requests to delete scheduled meeting templates. An attacker could exploit
this vulnerability by sending a crafted request to the Webex Meetings
interface to delete a scheduled meeting template. A successful exploit
could allow the attacker to delete a scheduled meeting template that
belongs to a user other than themselves.
Cisco has released software updates that address 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-webex-smtdelete-gJDurOgR
Affected Products
o Vulnerable Products
This vulnerability affects releases earlier than Release 40.7.0 of Cisco
Webex Meetings, which is cloud based.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Webex
Meetings Server.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has addressed this vulnerability in releases 40.7.0 and later of
Cisco Webex Meetings, which is cloud based. No user action is required.
Customers can determine the current remediation status or software version
by using the Help function in the service GUI.
Customers who need additional information are advised to contact the Cisco
Technical Assistance Center (TAC) 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 Sai Kiran Battaluri 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-webex-smtdelete-gJDurOgR
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
isco Webex Meetings User Email Address Information Disclosure Vulnerability
Priority: Medium
Advisory ID: cisco-sa-webex-mAkmV4qc
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvu40725
CVE-2020-3472
CWE-200
Summary
o A vulnerability in the contacts feature of Cisco Webex Meetings could allow
an authenticated, remote attacker with a legitimate user account to access
sensitive information.
The vulnerability is due to improper access restrictions on users who are
added within user contacts. An attacker on one Webex Meetings site could
exploit this vulnerability by sending specially crafted requests to the
Webex Meetings site. A successful exploit could allow the attacker to view
the details of users on another Webex site, including user names and email
addresses.
Cisco has released software updates that address 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-webex-mAkmV4qc
Affected Products
o Vulnerable Products
This vulnerability affects releases earlier than Release 40.7.0 of Cisco
Webex Meetings, which is cloud based.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Webex
Meetings Server.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has addressed this vulnerability in releases 40.7.0 and later of
Cisco Webex Meetings, which is cloud based. No user action is required.
Customers can determine the current remediation status or software version
by using the Help function in the service GUI.
Customers who need additional information are advised to contact the Cisco
Technical Assistance Center (TAC) 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 Sai Kiran Battaluri 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-webex-mAkmV4qc
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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