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Bug 2151378

Summary:	Selinux prevents squid from binding snmp ports
Product:	Red Hat Enterprise Linux 9	Reporter:	icesalov
Component:	selinux-policy	Assignee:	Nobody <nobody>
Status:	CLOSED ERRATA	QA Contact:	Milos Malik <mmalik>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	9.2	CC:	lvrabec, mmalik, tkorbar, zpytela
Target Milestone:	rc	Keywords:	Triaged
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	selinux-policy-38.1.13-1.el9	Doc Type:	Bug Fix
Doc Text:	Cause: Missing rule in the SELinux policy denies squid to provide statistics through snmp protocol. Consequence: Squid is not able to provide statistics through snmp protocol. Fix: Add tunable to allow squid bind snmp port. This change allows squid to bind standard snmp ports. Result: Squid is able to provide statistics through snmp protocol	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-11-07 08:52:17 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Deadline:	2023-05-16

Description icesalov 2022-12-06 22:03:49 UTC

Description of problem:

/CoreOS/squid/Regression/bz1198778-snmp-fd-leaks is failing on RHEL-9.2

Version-Release number of selected component (if applicable):
squid-5.5-5.el9.x86_64

How reproducible:
always

Steps to Reproduce:
1.run test /CoreOS/squid/Regression/bz1198778-snmp-fd-leaks

2.
3.

Actual results:
:: [ 17:23:08 ] :: [  BEGIN   ] :: Running 'snmpwalk -v2c -c public localhost:10161 .1.3.6.1.4.1.3495.1.1.1.0'
Timeout: No Response from localhost:10161
:: [ 17:23:14 ] :: [   FAIL   ] :: Command 'snmpwalk -v2c -c public localhost:10161 .1.3.6.1.4.1.3495.1.1.1.0' (Expected 0, got 1)


Expected results:
test pass

Additional info:

Comment 5 Milos Malik 2023-04-26 13:05:32 UTC

Caught in enforcing mode:
----
type=PROCTITLE msg=audit(04/26/2023 09:03:49.760:508) : proctitle=(squid-coord-9) --kid squid-coord-9 --foreground -f /etc/squid/squid.conf 
type=SOCKADDR msg=audit(04/26/2023 09:03:49.760:508) : saddr={ saddr_fam=inet6 laddr=:: lport=10161 } 
type=SYSCALL msg=audit(04/26/2023 09:03:49.760:508) : arch=x86_64 syscall=bind success=no exit=EACCES(Permission denied) a0=0xd a1=0x558e67dacdd0 a2=0x1c a3=0x7ffcac656494 items=0 ppid=27615 pid=27617 auid=unset uid=squid gid=squid euid=root suid=root fsuid=root egid=squid sgid=squid fsgid=squid tty=(none) ses=unset comm=squid exe=/usr/sbin/squid subj=system_u:system_r:squid_t:s0 key=(null) 
type=AVC msg=audit(04/26/2023 09:03:49.760:508) : avc:  denied  { name_bind } for  pid=27617 comm=squid src=10161 scontext=system_u:system_r:squid_t:s0 tcontext=system_u:object_r:snmp_port_t:s0 tclass=udp_socket permissive=0 
----

# rpm -qa selinux\* squid\* net-snmp\* | sort
net-snmp-5.9.1-9.el9.x86_64
net-snmp-agent-libs-5.9.1-9.el9.x86_64
net-snmp-libs-5.9.1-9.el9.x86_64
net-snmp-utils-5.9.1-9.el9.x86_64
selinux-policy-38.1.12-1.el9.noarch
selinux-policy-devel-38.1.12-1.el9.noarch
selinux-policy-targeted-38.1.12-1.el9.noarch
squid-5.5-5.el9.x86_64
#

Comment 18 errata-xmlrpc 2023-11-07 08:52:17 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 (selinux-policy bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2023:6617