Bug 53629

Summary:	SITE CHECKSUM violates RFC and causes client hangup or timeout
Product:	[Retired] Red Hat Linux	Reporter:	Peter Surda <shurdeek>
Component:	wu-ftpd	Assignee:	Bernhard Rosenkraenzer <bero>
Status:	CLOSED WONTFIX	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.1
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-02-19 13:32:52 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 Peter Surda 2001-09-13 13:42:48 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux 2.4.3-20mdk i686; en-US; Galeon)
Gecko/20010409

Description of problem:
According to RFC 959 or whatever, every command should be replied to.
However, if data has been transferred, SITE CHECKSUM doesn't produce a
reply. As I understand this is still unimplemented and should return an
error reply. The server doesn't freeze or anything, simply fails to produce
an answer and thusly the client freezes.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. user + pass + whatever
2. retr or stor
3. site checksum	

Actual Results:  no reply, but daemon still works.

Expected Results:  an error reply should be produced

Additional info:

A fix is IMHO straigthforward, it should be a one-line patch. I don't think
it's critical, however causes temporary freeze on a rfc-compliant client
and hence should be fixed.
I'd have written to wu-ftpd directly, their site seems to be down however.
I hope this has nothing to do with the terrorist attack and none of the
developers were injured.

Comment 1 Thomas Woerner 2004-02-19 13:32:52 UTC

Please use vsftpd, wu-ftpd is not maintained anymore.