AlienVault Unified Security Management nfcapd Process_ipfix_template_withdraw Heap-based Buffer Overflow Remote Code Execution Vulnerability

July 20th, 2017
ZDI-17-492 ZDI-CAN-4416

CVE ID

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

AlienVault

Affected Products

Unified Security Management

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of AlienVault Unified Security Management. Authentication is not required to exploit this vulnerability.

The specific flaw exists within nfcapd's Process_ipfix_template_withdraw function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute arbitrary code under the context of root.

Additional Details

AlienVault has issued an update to correct this vulnerability. More details can be found at:
https://www.alienvault.com/forums/discussion/8325/

Disclosure Timeline

  • 2017-01-10 - Vulnerability reported to vendor
  • 2017-07-20 - Coordinated public release of advisory
  • 2018-02-09 - Advisory Updated

Credit

62600BCA031B9EB5CB4A74ADDDD6771E

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