Multiple vulnerabilities in Cisco Webex Meetings and Webex Meetings Server
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-1525 CVE-2021-1517 |
| CWE-ID | CWE-601 CWE-693 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco WebEx Meetings Server Server applications / Conferencing, Collaboration and VoIP solutions Cisco Webex Meetings Server applications / Conferencing, Collaboration and VoIP solutions |
| Vendor |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Open redirect
EUVDB-ID: #VU53761
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1525
CWE-ID:
CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco WebEx Meetings Server: before 4.0 MR4
Cisco Webex Meetings: before 4.0 MR4
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Protection Mechanism Failure
EUVDB-ID: #VU53760
Risk: Medium
CVSSv3.1: 4.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1517
CWE-ID:
CWE-693 - Protection Mechanism Failure
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco WebEx Meetings Server: before 4.0 MR4
Cisco Webex Meetings: before 4.0 MR4
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
