Vulnerability identifier: #VU17207

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1638

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Webex Player
Client/Desktop applications / Multimedia software
Cisco WebEx Network Recording Player
Client/Desktop applications / Multimedia software

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper validation of Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. A remote unauthenticated attacker can trick the victim into opening a malicious ARF or WRF file with the affected software and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Webex Player: All versions

Cisco WebEx Network Recording Player: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-webex-rce

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Q & 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.