Advisory Details

September 21st, 2018

Cisco WebEx Network Recording Player NMVC RtpConfig Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2018-15422
CVSS SCORE	5.1, AV:N/AC:H/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 NMVC.DLL module. When parsing an ARF file, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. 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-20180919-webex
DISCLOSURE TIMELINE	2018-05-23 - Vulnerability reported to vendor 2018-09-21 - Coordinated public release of advisory 2018-09-21 - Advisory Updated
CREDIT	Steven Seeley (mr_me) of Source Incite

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