[NT] Computer Associates eTrust Intrusion Detection DoS Vulnerability
- From: SecuriTeam <support@xxxxxxxxxxxxxx>
- Date: 1 Mar 2007 13:47:59 +0200
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Computer Associates eTrust Intrusion Detection DoS Vulnerability
<http://www3.ca.com/solutions/Product.aspx?ID=163> Computer Associates
eTrust Intrusion Detection is "a network intrusion management and
prevention system, that includes real-time session monitoring and Internet
web filtering capabilities". A vulnerability in CA eTrust Intrusion
Detection allows remote attackers to cause the product by sending it a
* Computer Associates eTrust Intrusion Detection version 22.214.171.124
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
administration service to crash.
Since the heap is not used once corrupted, the heap overflow cannot be
exploited for more than a denial of service.
Computer Associates has issued patches to correct this vulnerability. More
information is available in their advisory which can be found at the
01/16/2007 - Initial vendor notification
01/16/2007 - Initial vendor response
02/27/2007 - Coordinated public disclosure
The information has been provided by
<mailto:idlabs-advisories@xxxxxxxxxxxx> iDefense Labs Security Advisories.
The original article can be found at:
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