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Category:   Application (Generic)  >   MaraDNS Vendors:   Trenholme, Sam
(Gentoo Issues Fix) MaraDNS Hash Table Collision Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1026734
SecurityTracker URL:
CVE Reference:   CVE-2012-0024   (Links to External Site)
Date:  Feb 23 2012
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 1.3.x prior to, 1.4.x prior to 1.4.09
Description:   A vulnerability was reported in MaraDNS. A remote user can cause denial of service conditions.

A remote user can send specially crafted DNS recursive queries to trigger hash collisions and cause significant performance degradation on the target server.

MaraDNS 2 is not affected.

Alexander Klink of n.runs AG and Julian Walde of Technische Universitat Darmstadt reported this vulnerability. Scott A. Crosby and Dan S. Wallach of Rice University reported the theoretical attack.

Impact:   A remote user can cause performance to degrade on the target server.
Solution:   Gentoo has issued a fix.

The Gentoo advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Randomization error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Jan 3 2012 MaraDNS Hash Table Collision Bug Lets Remote Users Deny Service

 Source Message Contents

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