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AUSCERT External Security Bulletin Redistribution
ESB-2020.2427
Cisco Webex Meetings and Cisco Webex Meetings Server HTML
Injection Vulnerability
16 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: WebEx
Webex Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3345
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-html-BJ4Y9tX
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Webex Meetings and Cisco Webex Meetings Server HTML Injection
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-webex-html-BJ4Y9tX
First Published: 2020 July 15 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvt75607 CSCvt75616 CSCvu00484
CVE-2020-3345
CWE-20
CVSS Score:
4.3 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in certain web pages of Cisco Webex Meetings and Cisco
Webex Meetings Server could allow an unauthenticated, remote attacker to
modify a web page in the context of a browser.
The vulnerability is due to improper checks on parameter values within
affected pages. An attacker could exploit this vulnerability by persuading
a user to follow a crafted link that is designed to pass HTML code into an
affected parameter. A successful exploit could allow the attacker to alter
the contents of a web page to redirect the user to potentially malicious
web sites, or the attacker could leverage this vulnerability to conduct
further client-side attacks.
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-html-BJ4Y9tX
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Webex
Meetings releases earlier than Release 40.6.0 and Cisco Webex Meetings
Server releases earlier than Release 4.0 MR3.
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.
Workarounds
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
providers.
Fixed Releases
At the time of publication, Cisco Webex Meetings releases 40.6.0 and later
and Cisco Webex Meetings Server releases 4.0 MR3 and later contained the
fix for this vulnerability.
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 vulnerability that is
described in this advisory.
Source
o Cisco would like to thank Gabriele Pippi of Certego IRT for reporting this
vulnerability. Cisco would like to thank the security researcher Prasenjit
Kanti Paul for independently reporting this vulnerability. Cisco would also
like to thank Shahriar Yazdipour for independently 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-html-BJ4Y9tX
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUL-15 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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