ESB-2017.2500 - [Win] Cisco Meeting App: Increased privileges - Existing account 2017-10-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2500
     Cisco Meeting App Local Privilege Escalation Vulnerability Medium
                              5 October 2017

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

Product:           Cisco Meeting App
Publisher:         Cisco Systems
Operating System:  Windows
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12266  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-cma

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Cisco Meeting App Local Privilege Escalation Vulnerability Medium

Advisory ID:
cisco-sa-20171004-cma

First Published:
2017 October 4 16:00 GMT

Version 1.0:
Final

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCvd77907

CVSS Score:
Base 4.2

CVE-2017-12266
CWE-264

Summary

A vulnerability in the routine that loads DLL files in Cisco Meeting App for 
Windows could allow an authenticated, local attacker to run an executable file
with privileges equivalent to those of Cisco Meeting App.

The vulnerability is due to incomplete input validation of the path name for 
DLL files before they are loaded. An attacker could exploit this vulnerability
by installing a crafted DLL file in a specific system directory. A successful
exploit could allow the attacker to execute commands on the underlying 
Microsoft Windows host with privileges equivalent to those of Cisco Meeting 
App. The attacker would need valid user credentials to exploit 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-20171004-cma

Affected Products

Vulnerable Products

This vulnerability affects Cisco Meeting App. 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.

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 a security researcher in ADLab of VenusTech for 
finding and reporting this vulnerability

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-cma

Revision History

Version Description 		Section 	Status 	Date
1.0 Initial public release. 	-		Final 	2017-October-04

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