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Category:   Application (File Transfer/Sharing)  >   Samba Vendors:   Samba.org
Samba DNS Reply Flag Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1030309
SecurityTracker URL:  http://securitytracker.com/id/1030309
CVE Reference:   CVE-2014-0239   (Links to External Site)
Date:  May 29 2014
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 4.0.0 to before 4.0.18
Description:   A vulnerability was reported in Samba. A remote user can cause denial of service conditions.

The DNS protocol handler does not check for the 'reply' flag when processing DNS requests. As a result, a remote user can send a spoofed reply packet to cause the target server to respond to the spoofed packet with a reply packet, potentially causing a reply loop between two vulnerable servers.

Impact:   A remote user can cause denial of service conditions.
Solution:   The vendor has issued a fix (pending version 4.0.18).

The vendor's advisory is available at:

http://www.samba.org/samba/security/CVE-2014-0239

Vendor URL:  www.samba.org/samba/security/CVE-2014-0239 (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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