SB2021060307 - Multiple vulnerabilities in Cisco Webex Meetings and Webex Meetings Server
Published: June 3, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Open redirect (CVE-ID: CVE-2021-1525)
CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper validation of URL paths in the application interface. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
2) Protection Mechanism Failure (CVE-ID: CVE-2021-1517)
CWE-ID: CWE-693 - Protection Mechanism Failure
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to unsafe handling of shared content within the multimedia viewer feature. A remote authenticated attacker can bypass security protections and prevent warning dialogs from appearing before files are offered to other users.
Remediation
Install update from vendor's website.