Vulnerability identifier: #VU50776

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1372

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco Webex Meetings Desktop App
Client/Desktop applications / Other client software
Cisco WebEx Meetings Server
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to insecure usage of shared memory. A local user with permissions to view system memory can run a specially crafted program to read shared memory of the affected application and obtain sernames, meeting information, or authentication tokens.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Webex Meetings Desktop App: 33.6.0 - 40.4.6

Cisco WebEx Meetings Server: 4.0 - 4.0MR3 Patch 3

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wda-pt-msh-6LWOcZ5
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv02342
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv21029

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.