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Bug 57589

Summary:	running up2date breaks ftp
Product:	[Retired] Red Hat Linux	Reporter:	dsamperi
Component:	wu-ftpd	Assignee:	Bernhard Rosenkraenzer <bero>
Status:	CLOSED NOTABUG	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.2
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2001-12-17 02:48:04 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 dsamperi 2001-12-17 02:47:59 UTC

From Bugzilla Helper:
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Description of problem:
After running up2date under RH 7.2 ftp no longer works. I get
"invalid login" every time I try, yet I can login using telnet.

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


How reproducible:
Always

Steps to Reproduce:
1.Run up2date under RH 7.2
2.Run ftp localhost
3.Try to login using your username/password
	

Actual Results:  Login failed

Expected Results:  Login successful

Additional info:

up2date can be hazardous to RH Linux

Comment 1 dsamperi 2001-12-17 06:02:51 UTC

Turns out I installed the PD Korn shell in /bin/ksh, but did not put this
into /etc/shells. This caused wu-ftpd to return "invalid login" for any user
who selected this as his/hre default shell.

This is a bug in wu-ftpd: it should say "unknown shell" or something more
helpful than "invalid login".

Comment 2 Bernhard Rosenkraenzer 2001-12-17 10:54:33 UTC

No, it's not a bug in wu-ftpd. It's a security feature.
If a cracker is told why he can't log in as a specific user, he'll have a much
better chance at circumventing it ("oh, this user must exist!").