TippingPoint Zero Day Initiative

Cisco WebEx ARF File DLL Planting Remote Code Execution Vulnerability

ZDI-18-008: January 3rd, 2018


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Cisco WebEx Network Recording Player. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of ARF files. While opening an ARF file, WebEx Network Recording Player loads a DLL from an unqualified path. An attacker can leverage this vulnerability to execute code under the context of the current process.

Vendor Response

Cisco has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2017-07-19 - Vulnerability reported to vendor
    2018-01-03 - Coordinated public release of advisory


This vulnerability was discovered by:
    Steven Seeley (mr_me) of Offensive Security