Advisory Details

July 31st, 2017

Trend Micro InterScan Messaging Security Proxy Command Injection Remote Code Execution Vulnerability

ZDI-17-502
ZDI-CAN-4744

CVE ID CVE-2017-11391
CVSS SCORE 6.5, AV:N/AC:L/Au:S/C:P/I:P/A:P
AFFECTED VENDORS Trend Micro
AFFECTED PRODUCTS InterScan Messaging Security
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['28228']. 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 Trend Micro InterScan Messaging Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the modTMCSS Proxy functionality. When parsing the "t" parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute arbitrary code under the context of the imss user.
ADDITIONAL DETAILS Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/solution/1117723
DISCLOSURE TIMELINE
  • 2017-05-04 - Vulnerability reported to vendor
  • 2017-07-31 - Coordinated public release of advisory
CREDIT Steven Seeley (mr_me) of Offensive Security
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