Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 409

Summary:	in.telnetd can be manipulated to permit a root login by a remote user
Product:	[Retired] Red Hat Linux	Reporter:	gort
Component:	telnet	Assignee:	David Lawrence <dkl>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	high
Version:	5.1	CC:	gort
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1998-12-14 14:10:22 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 gort 1998-12-14 12:53:20 UTC

We suffered a break in that has been traced to an individual
on a remote host connecting to several of our RedHat Linux
5.0 and 5.1 Intel-based systems.  The connection was via
telnet, and it appears in.telnetd was manipulated to give up
a root shell.  The remote user did not have a legitimate
account on any of our systems.  Redhat 5.0 Alpha systems in
the same lab were not attacked.

Several other Intel based Linux systems (both Redhat and
Slacware) at other sites on campus were succeessfully
attacked at the same time.

Comment 1 Mike Wangsmo 1998-12-14 14:10:59 UTC

Before we can be concerned about a security hole, the machines must be
updated to all security errata on updates.redhat.com.  If those
updates have been applied, then please reopen this bug.