SB2021020405 - Hyperlink Injection in Cisco Webex Meetings and Cisco Webex Meetings Server
Published: February 4, 2021
Security Bulletin ID
SB2021020405
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2021-1221)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to inject a hyperlink into a meeting invitation email.
The vulnerability exists due to insufficient validation of user-supplied input in the user interface. A remote authenticated attacker can generate a Webex Meetings invitation email that contains a link to a destination of their choosing.
Remediation
Install update from vendor's website.