Bug 131837 – nstat in iproute has a buffer overflow

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Bug 131837 - nstat in iproute has a buffer overflow

Summary:	nstat in iproute has a buffer overflow

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	iproute (Show other bugs)
Sub Component:
Version:	rawhide
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Radek Vokal
QA Contact:	Brock Organ
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2004-09-05 10:47 EDT by Steve Grubb
Modified:	2007-11-30 17:10 EST (History)
CC List:	0 users

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2004-09-06 05:21:19 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:

Attachments	(Terms of Use)
A patch that fixes the problem (1.39 KB, patch) 2004-09-05 10:48 EDT, Steve Grubb	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Steve Grubb 2004-09-05 10:47:09 EDT

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.4.2)
Gecko/20040308

Description of problem:
nstat has a buffer overflow that should be fixed. nstat reads an
environmental variable that's used to locate the /proc directory. If
this variable is inherited in the environment, an attacker could point
to a specially crafted proc entry to take advantage of the buffer
overflow.

I estimate this is low risk, but it must be taken care of.

Version-Release number of selected component (if applicable):
iproute-2.6.9-1

How reproducible:
Didn't try

Steps to Reproduce:
1. Found in a code review

Additional info:

I will attach a patch that addresses this. Its slightly modified
version from Openwall Linux. Please keep the name the same to show
proper attribution.

Comment 1 Steve Grubb 2004-09-05 10:48:34 EDT

Created attachment 103485 [details]
A patch that fixes the problem

Comment 2 Radek Vokal 2004-09-06 05:21:19 EDT

Thx for patch, iproute-2.6.9-2 built

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