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Category:   Application (Generic)  >   IDA Pro Vendors:   DataRescue
IDA Pro Authentication Bypass Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1017815
SecurityTracker URL:
CVE Reference:   CVE-2007-1666   (Links to External Site)
Updated:  May 16 2008
Original Entry Date:  Mar 23 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.8 - 5.1
Description:   A vulnerability was reported in IDA Pro. A remote user can bypass the password authentication feature and execute arbitrary code on the target system.

A remote user can bypass the password authentication feature due to a flaw in the processor_request() function. This allows the remote user to execute arbitrary code on the target system with the privileges of the user running the debugger on the target system.

The vendor was notified on March 20, 2007.

This vulnerability was reported to iDefense by enhalos.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix, available at:

Vendor URL: (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Any), UNIX (Solaris - SunOS), Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  iDefense Security Advisory 03.23.07: DataRescue IDA Pro Remote Debugger

DataRescue IDA Pro Remote Debugger Server Authentication Bypass

iDefense Security Advisory 03.23.07
Mar 23, 2007


DataRescue Inc.'s IDA Pro is a disassembler and debugger for Windows, Linux,
or Macintosh. It supports multiple binary formats as well as many processor
architectures. For more information about IDA Pro, visit the vendor's
at the following URL.


Remote exploitation of a password bypass vulnerability in DataRescue Inc.'s
IDA Pro Remote Debugger Server allows attackers to execute arbitrary code
under the context of the user who is running the remote debugger server.

Since version 4.8, IDA Pro supports remote debugging of x86/AMD64 Windows PE
applications and Linux ELF applications over TCP/IP networks. The IDA
distribution ships with a debugger server for Windows, Linux, and (as of
version 5.1) MacOS X.

The IDA Pro debugger server allows a user to specify a password for
authentication by supplying the -P parameter. The vulnerability specifically
exists in the the processor_request() function. This function is used
for the
initial packet exchange as well as subsequent requests. This function
did not
ensure that the remote user has authenticated prior to calling the
perform_request() function. As such, attacker requests sent prior to
authenticating would be processed normally.


Exploitation of the described vulnerability allows attackers to execute
arbitrary code under the context of the user who starts the remote debugger

It should be noted that the debugger server does not run as a service.
It must
be manually executed. Additionally, the remote debugger server can only
one debugger session at a time. As such, this vulnerability can not be
exploited while the debugger server is in use.


iDefense has confirmed the existence of this vulnerability in the remote
debugger server for Windows and Linux from IDA Pro versions 5.0 and 5.1. It
is suspected that the MacOS X version and earlier versions are also


In order to reduce exposure to this vulnerability, the remote debugger
should not be left running when it is not in use.

Additionally, access to the port used by the remote debugger server could be
blocked with the use of a firewall.


"Since this vulnerability is in the open part of IDA, we provide the
source code for the modified files."

DataRescue Inc. has made the fix available at the following URL.


A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.


03/20/2007  Initial vendor notification
03/20/2007  Initial vendor response
03/23/2007  Coordinated public disclosure


This vulnerability was reported to iDefense by enhalos.

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Disclaimer: The information in the advisory is believed to be accurate at
the time of publishing based on currently available information. Use of
the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on, this


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