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Category:   Application (Generic)  >   Net-snmp Vendors:
Net-snmp netsnmp_udp_fmtaddr() Lets Remote Users Bypass Access Controls
SecurityTracker Alert ID:  1021921
SecurityTracker URL:
CVE Reference:   CVE-2008-6123   (Links to External Site)
Date:  Mar 26 2009
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.0.9 - 5.4.2
Description:   A vulnerability was reported in Net-snmp. A remote user can bypass access controls to obtain potentially sensitive information.

When TCP wrappers is used for client authentication, the netsnmp_udp_fmtaddr() function in 'snmplib/snmpUDPDomain.c' does not properly parse rules in the 'hosts.allow' file. As a result, a remote user can bypass access rules and obtain potentially sensitive information.

Impact:   A remote user can obtain potentially sensitive information.
Solution:   The vendor has issued a source code fix, available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 26 2009 (Red Hat Issues Fix) Net-snmp netsnmp_udp_fmtaddr() Lets Remote Users Bypass Access Controls   (
Red Hat has released a fix for Red Hat Enterprise Linux 3.

 Source Message Contents

[Original Message Not Available for Viewing]

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