TippingPoint Zero Day Initiative

Cisco WebEx Recorder and Player WRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-17-934: December 6th, 2017


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Cisco WebEx Recorder and 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 WRF files. Crafted data in a WRF file can trigger an overflow of a heap-based buffer. 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

    2017-07-25 - Vulnerability reported to vendor
    2017-12-06 - Coordinated public release of advisory


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