#VU14676 Privilege escalation in Cisco Webex Meetings Suite and Cisco WebEx Meetings Server - CVE-2018-0422

Vulnerability identifier: #VU14676

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0422

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco Webex Meetings Suite
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 attacker to gain elevated privileges on the target system.

The vulnerability exists in the folder permissions due to folder permissions that grant a user the permission to read, write, and execute files in the Webex folders. A local attacker can write malicious files to the Webex client directory, affecting all other users of the targeted device and execute commands with elevated privileges.

Mitigation
Update Cisco Webex Meetings Suite to version 32.15.20 or 33.4.
Update Cisco Webex Meeting Server to version 3.0MR2.

Vulnerable software versions

Cisco Webex Meetings Suite: 31.20 - 31.20.2

Cisco WebEx Meetings Server: 2.8

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-webex-pe

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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.