LinuxSecurity.com
Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Welcome!
Sign up!
EnGarde Community
Login
Polls
What is the most important Linux security technology?
 
Advisories
Community
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
SELinux
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Securitydistro
Latest Newsletters
Linux Security Week: July 28th, 2014
Linux Advisory Watch: July 25th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
Gentoo: Wget Certificate validation error Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Gentoo =3D=3D=3D=3D=3D=3D=3D=3D An error in the X.509 certificate handling of Wget might enable remote attackers to conduct man-in-the-middle attacks.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200910-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: Wget: Certificate validation error
      Date: October 20, 2009
      Bugs: #286058
        ID: 200910-01

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=3D=3D=3D=3D=3D=3D=3D=3D

An error in the X.509 certificate handling of Wget might enable remote
attackers to conduct man-in-the-middle attacks.

Background
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

GNU Wget is a free software package for retrieving files using HTTP,
HTTPS and FTP, the most widely-used Internet protocols.

Affected packages
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  net-misc/wget       < 1.12                                >=3D 1.12

Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

The vendor reported that Wget does not properly handle Common Name (CN)
fields in X.509 certificates that contain an ASCII NUL (\0) character.
Specifically, the processing of such fields is stopped at the first
occurrence of a NUL character. This type of vulnerability was recently
discovered by Dan Kaminsky and Moxie Marlinspike.

Impact
=3D=3D=3D=3D=3D=3D

A remote attacker might employ a specially crafted X.509 certificate,
containing a NUL character in the Common Name field to conduct
man-in-the-middle attacks on SSL connections made using Wget.

Workaround
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

There is no known workaround at this time.

Resolution
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

All Wget users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =3Dnet-misc/wget-1.12

References
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

  [ 1 ] CVE-2009-3490
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-3490

Availability
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200910-01.xml

Concerns?
=3D=3D=3D=3D=3D=3D=3D=3D=3D

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=3D=3D=3D=3D=3D=3D=3D

Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5
 
< Prev   Next >
    
Partner

 

Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
Ottawa Linux Symposium: May get by with a little help from its friends
Black Hat 2014: How to crack just about everything
NSA Playset, 911 hacked and war cats: A wild ride at DEF CON 22
More Details of Onion/Critroni Crypto Ransomware Emerge
Is there Another NSA Leaker? Updated
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2014 Guardian Digital, Inc. All rights reserved.