Vulnerability identifier: #VU53760

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco WebEx Meetings Server
Server applications / Conferencing, Collaboration and VoIP solutions
Cisco Webex Meetings
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor:

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-multimedia-26DpqVRO

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Q & 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.