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Category:   Application (File Transfer/Sharing)  >   FTP (Generic) Vendors:   IBM
IBM AIX ftpd Port Timeout Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1014421
SecurityTracker URL:
CVE Reference:   CVE-2005-2238   (Links to External Site)
Updated:  Jun 16 2008
Original Entry Date:  Jul 8 2005
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in ftpd on IBM's AIX operating system. A remote authenticated user can cause denial of service conditions.

The ftpd process does not properly timeout ephemeral ports. A remote authenticated user (including an anonymous user) can use all available passive ephemeral ports. This may also cause ftpd to consume excessive memory for sockets.

Impact:   A remote authenticated user can cause denial of service conditions or can cause performance to degrade.
Solution:   The vendor has issued the following fixes.

APAR number for AIX 5.1.0: IY73498 (available approx. 09/07/05)
APAR number for AIX 5.2.0: IY72942 (available approx. 09/05/05)
APAR number for AIX 5.3.0: IY73497 (available approx. 09/05/05)

Interim fixes are also available for AIX 5.1.0, 5.2.0 and 5.3.0 at:

Vendor URL: (Links to External Site)
Cause:   Resource error, State error
Underlying OS:  UNIX (AIX)
Underlying OS Comments:  5.1, 5.2 and 5.3

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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