Bug 229194

Summary:	CVE-2006-1174 shadow-utils mailbox creation race condition
Product:	Red Hat Enterprise Linux 3	Reporter:	Mark J. Cox <mjc>
Component:	shadow-utils	Assignee:	Peter Vrabec <pvrabec>
Status:	CLOSED ERRATA	QA Contact:	David Lawrence <dkl>
Severity:	low	Docs Contact:
Priority:	medium
Version:	3.0	CC:	jlaska
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	source=cert,reported=20060512,public=20050223,impact=low
Fixed In Version:	RHSA-2007-0431	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-06-11 17:52:15 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 Mark J. Cox 2007-02-19 14:04:55 UTC

Clone for rhel3/2.1

+++ This bug was initially created as a clone of Bug #193053 +++

shadow-utils mailbox creation race condition

CERT reported an issue with the way shadow-utils' useradd program
creates the users mail spool file.  The file is intially created
improperly which gives it random permissions, owned by root for a
short period of time.  It may be possible for a local attacker to get
very lucky and acquire write permissions to a world writable SUID
file.

The upstream fix is here:
http://cvs.pld.org.pl/shadow/src/useradd.c?r1=1.50&r2=1.51

When we patch our packages, we may want to check the return value of
the the fchown and fchmod calls.



This issue also affects RHEL3
This issue also affects RHEL2.1

Comment 1 Peter Vrabec 2007-02-21 13:19:25 UTC

fixed in:
shadow-utils-4.0.3-28.RHEL3,
shadow-utils-20000902-19.

should I create errate for this?

Comment 4 Red Hat Bugzilla 2007-06-11 17:52:15 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2007-0431.html

Comment 5 Josh Bressers 2007-09-06 17:59:46 UTC

This flaw has been rated as having a low severity by the Red Hat
Security Response Team.  More information about this rating can be
found here: http://www.redhat.com/security/updates/classification/

The risks associated with fixing this bug are greater than the low severity
security risk. We therefore currently have no plans to fix this flaw in Red
Hat Enterprise Linux 2.1 which is in maintenance mode.

If you believe this judgement to be in error, please reopen this bug
with an appropriate comment.