ESB-2018.0050 - [Win][OSX] Cisco WebEx Advanced Recording Format Player: Execute arbitrary code/commands - Remote with user interaction 2018-01-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0050
         Cisco WebEx Advanced Recording Format Player Remote Code
                          Execution Vulnerability
                              5 January 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco WebEx Advanced Recording Format Player
Publisher:         Cisco Systems
Operating System:  Windows
                   OS X
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0104  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180103-warfp

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Cisco WebEx Advanced Recording Format Player Remote Code Execution 
Vulnerability

Medium

Advisory ID:
cisco-sa-20180103-warfp

First Published:
2018 January 3 16:00 GMT

Version 1.0:
Final

Workarounds:

No workarounds available

Cisco Bug IDs:
CSCvg78853
CSCvg78856
CSCvg78857
CVE-2018-0104
CWE-20

CVSS Score:
Base 4.7
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:L/E:X/RL:X/RC:X
CVE-2018-0104
CWE-20

Summary

A vulnerability in Cisco WebEx Network Recording Player for Advanced Recording
Format (ARF) files could allow a remote attacker to execute arbitrary code on
the system of a targeted user. The attacker could exploit this vulnerability
by sending the user a link or email attachment with a malicious ARF file and
persuading the user to follow the link or launch the file. Successful
exploitation could allow the attacker to execute arbitrary code on the users
system.
The Cisco WebEx Players are applications that are used to play back WebEx
meeting recordings that have been recorded by an online meeting attendee. The
player can be automatically installed when the user accesses a recording file
that is hosted on a WebEx server.
Cisco has updated the affected version of the Cisco WebEx Business Suite
meeting sites, Cisco WebEx Meetings sites, Cisco WebEx Meetings Server, and
Cisco WebEx ARF players to address this vulnerability.
There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180103-warfp

Affected Products

Vulnerable Products

This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco
WebEx Meetings sites, Cisco WebEx Meetings Server, and Cisco WebEx ARF
players. For information about affected software releases, consult the Cisco
bug ID(s) at the top of this advisory.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this
vulnerability.

Workarounds

There are no workarounds that address this vulnerability. However, it is
possible to remove all WebEx software completely from a system using the
Meeting Services Removal Tool (for Microsoft Windows) or Mac WebEx Meeting
Application Uninstaller (for Apple Mac OS X), available for download from the
Cisco Collaboration Help for Cisco Spark, WebEx, and Jabber article at
https://collaborationhelp.cisco.com/article/en-us/WBX000026396.
Removal of the WebEx software from a Linux or UNIX-based system can be
accomplished by following the steps in the Cisco Collaboration Help for Cisco
Spark, WebEx, and Jabber article at
https://collaborationhelp.cisco.com/article/en-us/WBX28548.

Fixed Software

For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.
When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.

Source

Cisco would like to thank Steven Seeley of Offensive Security, working with
Trend Micros Zero Day Initiative, for reporting this vulnerability.

Cisco Security Vulnerability Policy

To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.

Subscribe to Cisco Security Notifications

Subscribe

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180103-warfp

Revision History

Version	Description		Section	Status	Date
1.0	Initial public release.		Final	2018-January-03

Legal Disclaimer

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end
users of Cisco products.

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