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Bug 249884

Summary:	CVE-2007-0235 Stack overflow libgtop when pathname of mmap()-ed file is too long
Product:	Red Hat Enterprise Linux 4	Reporter:	Lubomir Kundrak <lkundrak>
Component:	libgtop2	Assignee:	Søren Sandmann Pedersen <sandmann>
Status:	CLOSED ERRATA	QA Contact:	desktop-bugs <desktop-bugs>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.0	CC:	kem
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	https://launchpad.net/ubuntu/+source/libgtop2/+bug/79206
Whiteboard:	impact=moderate,source=gentoo,reported=20070115,public=20070114
Fixed In Version:	RHSA-2007-0765	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-08-07 19:24:04 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 Lubomir Kundrak 2007-07-27 16:47:41 UTC

+++ This bug was initially created as a clone of Bug #222637 +++

Description of problem:

Stack based buffer overflow occurs, when gnome-system monitor is launched
while process that has a file with too long filename mapped in its address
space (visible via /proc/$PID/maps), and could potentially lead to arbitrary
code execution (mitigated by SSP).

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

At least FC6 and RHEL5 libgtop2.

How reproducible:

Always.

Steps to Reproduce:

# Create a file with too long pathname. Some filesystems limit filenames
# to 255 characters, so use a deep directory hierarchy instead
export dir=$(perl -e " print 's/'x1000;")
mkdir -p $dir

# Copy a binary image thata will get mapped upon execution there and run it.
# Sleep will harmlessly run for some time...
cp /bin/sleep $dir
$dir/sleep 100 &

# Run system monitor while the program is running
gnome-system-monitor

Actual results:

*** stack smashing detected ***: gnome-system-monitor terminated

Expected results:

Gnome-system-monitor should help us on our way to salvation,
eternal and everlasting love and peace.

Additional info:

Patch from upstream is available, see the upstream BTS:
http://bugzilla.gnome.org/show_bug.cgi?id=396477
http://bugzilla.gnome.org/attachment.cgi?id=80254&action=view

-- Additional comment from lkundrak on 2007-01-15 08:30 EST --
Created an attachment (id=145571)
Patch for Gnome bug #396477 libgtop buffer overflow


-- Additional comment from bressers on 2007-01-25 14:19 EST --
This flaw also affects FC5

Comment 6 Red Hat Bugzilla 2007-08-07 19:24:04 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-2007-0765.html