Vulnerability identifier: #VU24528

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3131

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Webex Teams
Client/Desktop applications / Office applications

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the Cisco Webex Teams client for Windows due to insufficient input validation when processing received adaptive cards. A remote authenticated attacker can send an adaptive card with malicious content and cause the targeted user's client to crash continuously.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Webex Teams: 3.0.13131

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-cards-dos-FWzNcXPq

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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.