Microsoft Data Access Components (MDAC) broadcast request buffer overflow

mdac-broadcastrequest-bo (14187) The risk level is classified as HighHigh Risk


Microsoft Data Access Components (MDAC) is vulnerable to a buffer overflow, caused by improper bounds checking in a specific MDAC component. If a remote attacker spoofs a SQL server that listens on a network for a vulnerable system to send a broadcast request, the attacker could then send a specially-crafted UDP packet in response to a request to overflow a buffer and execute code on the system with privileges of the process executing MDAC.

Note: This vulnerability is similar to the vulnerability previously discussed in Microsoft Security Bulletin MS03-033. However, the vulnerable codepath for this vulnerability is different from the vulnerable codepath of the vulnerability reported in Microsoft Security Bulletin MS03-033.


Gain Access


Apply the patch for this vulnerability, as listed in Microsoft Security Bulletin MS04-003. See References.


  • CIAC Information Bulletin O-053: Microsoft Buffer Overrun in MDAC Function Could Allow Code Execution.
  • Microsoft Security Bulletin MS04-003: Buffer Overrun in MDAC Function Could Allow code execution (832483).
  • BID-9407: Microsoft MDAC Function Broadcast Response Buffer Overrun Vulnerability
  • CVE-2003-0903: Buffer overflow in a component of Microsoft Data Access Components (MDAC) 2.5 through 2.8 allows remote attackers to execute arbitrary code via a malformed UDP response to a broadcast request.
  • OSVDB ID: 3457: Microsoft MDAC Broadcast Reply Overflow
  • US-CERT VU#139150: Microsoft Data Access Components (MDAC) contains buffer overflow

Platforms Affected:

  • Microsoft Data Access Components 2.5
  • Microsoft Data Access Components 2.6
  • Microsoft Data Access Components 2.7
  • Microsoft Data Access Components 2.8


Jan 13, 2004

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