Advisory Details

December 6th, 2017

Cisco WebEx Network Recording Player Command Injection Remote Code Execution Vulnerability

ZDI-17-933
ZDI-CAN-5041

CVE ID CVE-2017-12372
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Cisco
AFFECTED PRODUCTS WebEx
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 29640. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Cisco WebEx Network Recording Player. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the wbx URI handler. When parsing the register parameter, the process does not properly validate a user-supplied string before using it to execute a system command. An attacker can leverage this vulnerability to execute commands under the context of the current user.

ADDITIONAL DETAILS Cisco has issued an update to correct this vulnerability. More details can be found at:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-webex-players
DISCLOSURE TIMELINE
  • 2017-08-10 - Vulnerability reported to vendor
  • 2017-12-06 - Coordinated public release of advisory
CREDIT rgod
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