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Category:   Application (Security)  >   eTrust Intrusion Detection Vendors:   CA
CA eTrust Intrusion Detection Administration Interface Lets Remote Users Deny Service
SecurityTracker Alert ID:  1017706
SecurityTracker URL:
CVE Reference:   CVE-2007-1005   (Links to External Site)
Date:  Feb 27 2007
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0 SP1, 3.0, 3.0 SP1
Description:   A vulnerability was reported in CA eTrust Intrusion Detection. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to the administration interface on TCP port 9191 to cause the target intrustion detection engine to crash.

The vendor was notified on January 16, 2007.

iDefense reported this vulnerability.

Impact:   A remote user can cause the intrustion detection engine to crash.
Solution:   The vendor has issued the following patches.

eTrust Intrusion Detection 3.0 SP1 - QO85469
eTrust Intrusion Detection 3.0 - QO85472
eTrust Intrusion Detection 2.0 SP1 - QO85488

The CA advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Exception handling error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  iDefense Security Advisory 02.27.07: Computer Associates eTrust

Computer Associates eTrust Intrusion Detection Denial of Service

iDefense Security Advisory 02.27.07
Feb 27, 2007


Computer Associates eTrust Intrusion Detection is a network intrusion
management and prevention system, that includes real-time session
monitoring and Internet web filtering capabilities. More information can
be found on the vendors site at the following URL.


The eTrust Intrusion Detection process listens on TCP port 9191 for remote
administration functions. Administrator login requires that keys be
exchanged including a session key with blowfish encryption of the login
and the password.

Since the administration server fails to properly validate the key length
value, it is possible to cause the product to crash. During decryption, 4
is subtracted from the specified length and the result used as the length
of the data to decrypt. The decryption loop will proceed to overwrite the
entire heap segment. This leads to an unhandled exception.


Exploitation of this vulnerability allows attackers to cause the
service to crash.

Since the heap is not used once corrupted, the heap overflow cannot be
exploited for more than a denial of service.


iDefense has confirmed this vulnerability in Computer Associates eTrust
Intrusion Detection version Other versions are suspected


iDefense is not aware of any workarounds for this issue.


Computer Associates has issued patches to correct this vulnerability. More
information is available in their advisory which can be found at the


The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2007-1005 to this issue. This is a candidate for inclusion in
the CVE list (, which standardizes names for
security problems.


01/16/2007  Initial vendor notification
01/16/2007  Initial vendor response
02/27/2007  Coordinated public disclosure


The discoverer of this vulnerability wishes to remain anonymous.

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