O-194: GNOME VFS "extfs" Vulnerability Privacy and Legal Notice

CIAC INFORMATION BULLETIN

O-194: GNOME VFS "extfs" Vulnerability

[Red Hat Security Advisory: RHSA-2004:373-13]

 August 4, 2004 19:00 GMT
PROBLEM: GNOME VFS is the GNOME virtual file system. The "extfs" backends make it possible to implement file systems using scripts. Flaws have been found in these scripts.
PLATFORM: Red Hat Enterprise Linux AS, ES, and WS v.2.1
Red Hat Enterprise Linux AS, ES, and WS v.3
DAMAGE: An attacker who successfully enticed a user to open a specially-craft URI using gnome-vfs could perform actions as that user.
SOLUTION: Install appropriate updated vendor packages.
VULNERABILITY
ASSESSMENT:		 The risk is LOW. These flaws do not appear to be easily exploitable. Users need to be enticed to perform a specific action in order to install a link needed for the exploit onto the user's system. There are no indications of privilege escalation capabilities.
LINKS:  
  CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-194.shtml
  ORIGINAL BULLETIN: https://rhn.redhat.com/errata/RHSA-2004-373.html
  CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=
CAN-2004-0494 
[***** Start Red Hat Security Advisory: RHSA-2004:373-13 *****]

GNOME VFS updates address extfs vulnerability

Advisory: RHSA-2004:373-13 
Last updated on: 2004-08-04 
Affected Products: Red Hat Desktop (v. 3)
Red Hat Enterprise Linux AS (v. 2.1)
Red Hat Enterprise Linux AS (v. 3)
Red Hat Enterprise Linux ES (v. 2.1)
Red Hat Enterprise Linux ES (v. 3)
Red Hat Enterprise Linux WS (v. 2.1)
Red Hat Enterprise Linux WS (v. 3)
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor 
CVEs (cve.mitre.org): CAN-2004-0494
 
Security Advisory 


Details:

Updated GNOME VFS packages that remove potential extfs-related
vulnerabilities are now available.

GNOME VFS is the GNOME virtual file system. It provides a modular
architecture and ships with several modules that implement support for file
systems, HTTP, FTP, and others. The extfs backends make it possible to
implement file systems for GNOME VFS using scripts.

Flaws have been found in several of the GNOME VFS extfs backend scripts. 
Red Hat Enterprise Linux ships with vulnerable scripts, but they are not
used by default. An attacker who is able to influence a user to open a
specially-crafted URI using gnome-vfs could perform actions as that user.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2004-0494 to this issue.

Users of Red Hat Enterprise Linux should upgrade to these updated packages,
which remove these unused scripts.



Updated packages:

Red Hat Desktop (v. 3) 

-----------------------------------------------------------------------------
 
AMD64: 
gnome-vfs2-2.2.5-2E.1.x86_64.rpm              06271691a5533316f595d9d136204d15 
gnome-vfs2-devel-2.2.5-2E.1.x86_64.rpm        fba4ca47955f92be0b082c6fa587b14a 
  
SRPMS: 
gnome-vfs2-2.2.5-2E.1.src.rpm                 fbcb6e48b0e04a54383894867a79057d 
  
i386: 
gnome-vfs2-2.2.5-2E.1.i386.rpm                bf38b8427b6c60a93169a266cca8e8f1 
gnome-vfs2-devel-2.2.5-2E.1.i386.rpm          f7f903cc6b74cb22153e25c9f78f4311 
  
Red Hat Enterprise Linux AS (v. 2.1) 

-----------------------------------------------------------------------------
 
SRPMS: 
gnome-vfs-1.0.1-18.1.src.rpm                  a4cf8f82b440789276f366536e852588 
  
i386: 
gnome-vfs-1.0.1-18.1.i386.rpm                 0d23312d359424e46b0fcb713b0eab85 
gnome-vfs-devel-1.0.1-18.1.i386.rpm           c7e27477bc25189730309ad69bee1b00 
  
ia64: 
gnome-vfs-1.0.1-18.1.ia64.rpm                 dc0ed88d802874697908d2b02f83a24c 
gnome-vfs-devel-1.0.1-18.1.ia64.rpm           c9c83b9b1ce79fa7bfdbdf1cdd0c4fb5 
  
Red Hat Enterprise Linux AS (v. 3) 

-----------------------------------------------------------------------------
 
AMD64: 
gnome-vfs2-2.2.5-2E.1.x86_64.rpm              06271691a5533316f595d9d136204d15 
gnome-vfs2-devel-2.2.5-2E.1.x86_64.rpm        fba4ca47955f92be0b082c6fa587b14a 
  
SRPMS: 
gnome-vfs2-2.2.5-2E.1.src.rpm                 fbcb6e48b0e04a54383894867a79057d 
  
i386: 
gnome-vfs2-2.2.5-2E.1.i386.rpm                bf38b8427b6c60a93169a266cca8e8f1 
gnome-vfs2-devel-2.2.5-2E.1.i386.rpm          f7f903cc6b74cb22153e25c9f78f4311 
  
ia64: 
gnome-vfs2-2.2.5-2E.1.ia64.rpm                9ec0d04f82412d17c699793367a7b980 
gnome-vfs2-devel-2.2.5-2E.1.ia64.rpm          a0241d4990bbb961452ada3d4aacaceb 
  
ppc: 
gnome-vfs2-2.2.5-2E.1.ppc.rpm                 4a471457ca073a26c762cca8fcd3ad88 
gnome-vfs2-devel-2.2.5-2E.1.ppc.rpm           1f57211bf9d472e0e5ae6f6b9c1dad26 
  
s390: 
gnome-vfs2-2.2.5-2E.1.s390.rpm                14dfeb34e2193f74ae2598511e593ffd 
gnome-vfs2-devel-2.2.5-2E.1.s390.rpm          d11d79d93d7a54a365400f81bf15c522 
  
s390x:   
gnome-vfs2-2.2.5-2E.1.s390x.rpm               177418bc2e61fc5b0f72d08c6c8dcade 
gnome-vfs2-devel-2.2.5-2E.1.s390x.rpm         f70f90a1c8d47770441bcf09330809d1 
  
Red Hat Enterprise Linux ES (v. 2.1) 

-----------------------------------------------------------------------------
 
SRPMS: 
gnome-vfs-1.0.1-18.1.src.rpm                  a4cf8f82b440789276f366536e852588 
  
i386: 
gnome-vfs-1.0.1-18.1.i386.rpm                 0d23312d359424e46b0fcb713b0eab85 
gnome-vfs-devel-1.0.1-18.1.i386.rpm           c7e27477bc25189730309ad69bee1b00 
  
Red Hat Enterprise Linux ES (v. 3) 

-----------------------------------------------------------------------------
 
AMD64: 
gnome-vfs2-2.2.5-2E.1.x86_64.rpm              06271691a5533316f595d9d136204d15 
gnome-vfs2-devel-2.2.5-2E.1.x86_64.rpm        fba4ca47955f92be0b082c6fa587b14a 
  
SRPMS: 
gnome-vfs2-2.2.5-2E.1.src.rpm                 fbcb6e48b0e04a54383894867a79057d 
  
i386: 
gnome-vfs2-2.2.5-2E.1.i386.rpm                bf38b8427b6c60a93169a266cca8e8f1 
gnome-vfs2-devel-2.2.5-2E.1.i386.rpm          f7f903cc6b74cb22153e25c9f78f4311 
  
ia64: 
gnome-vfs2-2.2.5-2E.1.ia64.rpm                9ec0d04f82412d17c699793367a7b980 
gnome-vfs2-devel-2.2.5-2E.1.ia64.rpm          a0241d4990bbb961452ada3d4aacaceb 
  
Red Hat Enterprise Linux WS (v. 2.1) 

-----------------------------------------------------------------------------
 
SRPMS: 
gnome-vfs-1.0.1-18.1.src.rpm                  a4cf8f82b440789276f366536e852588 
  
i386: 
gnome-vfs-1.0.1-18.1.i386.rpm                 0d23312d359424e46b0fcb713b0eab85 
gnome-vfs-devel-1.0.1-18.1.i386.rpm           c7e27477bc25189730309ad69bee1b00 
  
Red Hat Enterprise Linux WS (v. 3) 

-----------------------------------------------------------------------------
 
AMD64: 
gnome-vfs2-2.2.5-2E.1.x86_64.rpm              06271691a5533316f595d9d136204d15 
gnome-vfs2-devel-2.2.5-2E.1.x86_64.rpm        fba4ca47955f92be0b082c6fa587b14a 
  
SRPMS: 
gnome-vfs2-2.2.5-2E.1.src.rpm                 fbcb6e48b0e04a54383894867a79057d 
  
i386: 
gnome-vfs2-2.2.5-2E.1.i386.rpm                bf38b8427b6c60a93169a266cca8e8f1 
gnome-vfs2-devel-2.2.5-2E.1.i386.rpm          f7f903cc6b74cb22153e25c9f78f4311 
  
ia64: 
gnome-vfs2-2.2.5-2E.1.ia64.rpm                9ec0d04f82412d17c699793367a7b980 
gnome-vfs2-devel-2.2.5-2E.1.ia64.rpm          a0241d4990bbb961452ada3d4aacaceb 
  
Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor 

-----------------------------------------------------------------------------
 
SRPMS: 
gnome-vfs-1.0.1-18.1.src.rpm                  a4cf8f82b440789276f366536e852588 
  
ia64: 
gnome-vfs-1.0.1-18.1.ia64.rpm                 dc0ed88d802874697908d2b02f83a24c 
gnome-vfs-devel-1.0.1-18.1.ia64.rpm           c9c83b9b1ce79fa7bfdbdf1cdd0c4fb5 
  
(The unlinked packages above are only available from the Red Hat Network)
 

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/


References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0494


Keywords:

extfs, gnome-vfs, gnome-vfs2 



-----------------------------------------------------------------------------
The listed packages are GPG signed by Red Hat, Inc. for security. Our key 
is available at:
http://www.redhat.com/solutions/security/news/publickey/#key 
You can verify each package and see who signed it with the following 
command:

rpm --checksig -v filename 
If you only wish to verify that each package has not been corrupted or 
tampered with, examine only the md5sum with the following command:

md5sum filename 
The Red Hat security contact is security@redhat.com. More contact details 
at http://www.redhat.com/solutions/security/news/contact.html
 

Copyright © 2002 Red Hat, Inc. All rights reserved. 

[***** End Red Hat Security Advisory: RHSA-2004:373-13 *****]
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