Bug 1184433

Summary:	udpTable has wrong indices
Product:	Red Hat Enterprise Linux 7	Reporter:	Dalibor Pospíšil <dapospis>
Component:	net-snmp	Assignee:	Jan Safranek <jsafrane>
Status:	CLOSED ERRATA	QA Contact:	Dalibor Pospíšil <dapospis>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	jsafrane, ksrot, qe-baseos-security, rvokal
Target Milestone:	rc
Target Release:	---
Hardware:	s390x
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: snmpd, the Net-SNMP daemon, wrongly converted IPv4 addresses into network format on big-endian platform when processing UDP-MIB::udpTable. Consequence: Indices in the table were always '0.0.0.0' on big-endian platform, instead of real local IP address of UDP socket. Fix: The IP address is now converted correctly. Result: UDP-MIB::udpTable now contains local IP addresses as indices of the table.	Story Points:	---
Clone Of:	556824	Environment:
Last Closed:	2015-11-19 11:45:45 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Dalibor Pospíšil 2015-01-21 11:34:39 UTC

Similar problem can be reproduced on RHEL5.4 on s390x.

after executing following command in the test 58:
# /usr/src/redhat/BUILD/net-snmp-5.3.2.2/apps/snmpnetstat/snmpnetstat -Cn -Cp udp -v2c -c testcommunity udp:localhost:8791

The output is searched for "127.0.0.1.8791" therefore it should be something like:

Active Internet (udp) Connections
Proto Local Address               
... excluded several lines with open udp ports ...
udp   127.0.0.1.123         
udp   127.0.0.1.8791        

but instead of it the output is:

Active Internet (udp) Connections
Proto Local Address               
... excluded several lines with open udp ports ...
udp   *:123         
udp   *:8791        

and therefore the test fails

58:testing if snmpnetstat finds the running agent in udpTable...FAIL


Version of the component:
net-snmp-5.7.2-20.el7.s390x

Comment 2 Jan Safranek 2015-06-18 09:49:12 UTC

This applies also to ppc64:

# snmpwalk localhost udpTable
...
UDP-MIB::udpLocalAddress.0.0.0.0.323 = IpAddress: 127.0.0.1
...

The IP address in the index (0.0.0.0) should be the same as the value (127.0.0.1).

Comment 3 Jan Safranek 2015-06-18 10:58:52 UTC

Upstream patch: https://sourceforge.net/p/net-snmp/patches/1300/

https://sourceforge.net/p/net-snmp/code/ci/c5c435658032c26fde69978e2610c879b3a4bcc8/

Comment 7 errata-xmlrpc 2015-11-19 11:45:45 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-2345.html