CVE-2021-1221: A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation ...

Summary

A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation email. The vulnerability is due to insufficient input validation. An attacker could exploit this vulner...

What to do

Update cisco webex_meetings to version 41.1.0 or later.
Update cisco webex_meetings_server to version 3.0 or later.

Affected software

Vendor	Product	Affected versions
cisco	webex_meetings	< 41.1.0 `cpe:2.3:a:cisco:webex_meetings::::::::`
cisco	webex_meetings_server	< 3.0 3.0 4.0 `cpe:2.3:a:cisco:webex_meetings_server::::::::`

Original advisory text

A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation ...

A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation email. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by entering a URL into a field in the user interface. A successful exploit could allow the attacker to generate a Webex Meetings invitation email that contains a link to a destination of their choosing. Because this email is sent from a trusted source, the recipient may be more likely to click the link.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-w... Vendor Advisory