Advisory Details

December 6th, 2017

Cisco WebEx ARF File Parsing Uninitialized Memory Remote Code Execution Vulnerability

ZDI-17-930
ZDI-CAN-4914

CVE ID CVE-2017-12371
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Cisco
AFFECTED PRODUCTS WebEx
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. Crafted data in an ARF file can trigger access to memory prior to initialization. An attacker can leverage this vulnerability to execute code under the context of the current process.

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
  • 2017-08-03 - Vulnerability reported to vendor
  • 2017-12-06 - Coordinated public release of advisory
CREDIT Steven Seeley (mr_me) of Offensive Security
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