| Summary: | proftpd cannot bind passive ports | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan "Yenya" Kasprzak <kas> |
| Component: | selinux-policy-targeted | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Ben Levenson <benl> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 16 | CC: | dwalsh |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-11-29 03:12:51 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
|
Description
Jan "Yenya" Kasprzak
2011-11-28 14:58:02 UTC
Sorry for the fat finger on my side. Here is the report:
Description of problem:
some EPSV commands in proftpd fails, with the following AVC logged:
type=AVC msg=audit(1322255771.231:29746): avc: denied { name_bind } for pid=12179 comm="proftpd" src=29760 scontext=system_u:system_r:ftpd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unreserved_port_t:s0 tclass=tcp_socket
The following rule fixes this:
allow ftpd_t unreserved_port_t:tcp_socket name_bind;
Version-Release number of selected component (if applicable):
proftpd-1.3.4-1.fc16.x86_64
selinux-policy-3.10.0-56.fc16.noarch
selinux-policy-targeted-3.10.0-56.fc16.noarch
How reproducible:
100 %
Steps to Reproduce:
1. install proftpd and configure it on an IPv6-reachable host
2. connect as anonymous from the remote host, make sure the client uses passive mode, enable debugging
3. list a directory several times
Actual results:
EPSV <number> command fails, the above mentioned AVC is logged.
Expected results:
Passive mode should work for all unused source ports.
Additional info:
Proftpd docs suggest that at least port range 49152-65534 should be made available for passive connections:
http://www.proftpd.org/docs/directives/linked/config_ref_PassivePorts.html
And it is, but this tried to bind to port 29760 Oops this is fixed in selinux-policy 3.10.0-57 yum -y update selinux-policy 3.10.0-57 is still not available via yum (updates.repo). I have downloaded selinux-policy-3.10.0-62.fc16.noarch (and -targeted) from Koji, and it indeed fixes the problem for me. Thanks! |