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AUSCERT External Security Bulletin Redistribution
ESB-2020.2683
Cisco Webex Meetings Desktop App Information Disclosure Vulnerabilities
6 August 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Webex Meetings Desktop App
Publisher: Cisco Systems
Operating System: Windows
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3502 CVE-2020-3501
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-client-g3zevBcp
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Webex Meetings Desktop App Information Disclosure Vulnerabilities
Priority: Medium
Advisory ID: cisco-sa-webex-client-g3zevBcp
First Published: 2020 August 5 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvt70779CSCvt70813CSCvt78057CSCvu82730CSCvu82733
CVE-2020-3501
CVE-2020-3502
CWE-20
Summary
o Multiple vulnerabilities in the user interface of Cisco Webex Meetings
Desktop App could allow an authenticated, remote attacker to obtain
restricted information from other Webex users.
These vulnerabilities are due to improper input validation of parameters
returned to the application from a web site. An attacker with a valid Webex
account could exploit these vulnerabilities by persuading a user to follow
a URL that is designed to return malicious path parameters to the affected
software. A successful exploit could allow the attacker to obtain
restricted information from other Webex users.
Cisco has 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-webex-client-g3zevBcp
Affected Products
o Vulnerable Products
At the time of publication, these vulnerabilities affected Cisco Webex
Meetings Desktop App releases earlier than releases 39.5.24, 40.4.6, and
40.6.
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 these vulnerabilities.
Workarounds
o There are no workarounds that address these vulnerabilities.
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
providers.
Fixed Releases
At the time of publication, the following releases contained the fix for
these vulnerabilities:
Cisco Webex Product Fixed Releases
Cisco Webex Meetings Desktop App 40.4.6 and later
40.6 and later
Cisco Webex Meetings Desktop App, lockdown 39.5.24 and later
versions
3.0 MR3 Security Patch 3 and
Cisco Webex Meetings Server later
4.0 MR3 Security Patch 2 and
later
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
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 vulnerabilities that are
described in this advisory.
Source
o These vulnerabilities were found during internal security testing.
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-client-g3zevBcp
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-AUG-05 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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