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RedHat: vim command execution vulnerability Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
RedHat Linux Georgi Guninski found that these comments can be carefully crafted in order to call external programs. This could allow an attacker to create a text file such that when it is opened arbitrary commands are executed.

---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated vim packages fix modeline vulnerability
Advisory ID:       RHSA-2002:297-17
Issue date:        2003-01-16
Updated on:        2003-01-15
Product:           Red Hat Linux
Keywords:          vim modeline security
Cross references:  
Obsoletes:         RHEA-2002:017
CVE Names:         CAN-2002-1377
---------------------------------------------------------------------

1. Topic:

Updated vim packages are now available for Red Hat Linux.  These 
updates resolve a security issue when opening a specially crafted text 
file.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - i386
Red Hat Linux 7.0 - i386
Red Hat Linux 7.1 - i386
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386

3. Problem description:

VIM (Vi IMproved) is a version of the vi editor.  
 
VIM allows a user to set the modeline differently for each edited text 
file by placing special comments in the files.  Georgi Guninski found that
these comments can be carefully crafted in order to call external programs.
 This could allow an attacker to create a text file such that when it is
opened arbitrary commands are executed.   

Users of VIM are advised to upgrade to these errata packages which have 
been patched to disable the usage of dangerous functions in modelines.

4. Solution:

Before applying this update, make sure all previously released errata 
relevant to your system have been applied. 
 
To update all RPMs for your particular architecture, run: 
 
rpm -Fvh [filenames] 
 
where [filenames] is a list of the RPMs you wish to upgrade.  Only those 
RPMs which are currently installed will be updated.  Those RPMs which are 
not installed but included in the list will not be updated.  Note that 
you can also use wildcards (*.rpm) if your current directory *only*
contains the desired RPMs. 
 
Please note that this update is also available via Red Hat Network.  Many 
people find this an easier way to apply updates.  To use Red Hat Network, 
launch the Red Hat Update Agent with the following command: 
 
up2date 
 
This will start an interactive process that will result in the 
appropriate RPMs being upgraded on your system.

5. RPMs required:

Red Hat Linux 6.2:

SRPMS: 
ftp://updates.Red Hat.com/6.2/en/os/SRPMS/vim-6.1-18.6x.3.src.rpm

i386: 
ftp://updates.Red Hat.com/6.2/en/os/i386/vim-common-6.1-18.6x.3.i386.rpm 
ftp://updates.Red Hat.com/6.2/en/os/i386/vim-minimal-6.1-18.6x.3.i386.rpm 
ftp://updates.Red Hat.com/6.2/en/os/i386/vim-enhanced-6.1-18.6x.3.i386.rpm 
ftp://updates.Red Hat.com/6.2/en/os/i386/vim-X11-6.1-18.6x.3.i386.rpm

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com/7.0/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.0/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.0/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.0/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.0/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm

Red Hat Linux 7.1:

SRPMS: 
ftp://updates.Red Hat.com/7.1/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.1/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.1/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.1/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.1/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm

Red Hat Linux 7.2:

SRPMS: 
ftp://updates.Red Hat.com/7.2/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.2/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.2/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.2/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.2/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm

ia64: 
ftp://updates.Red Hat.com/7.2/en/os/ia64/vim-common-6.1-18.7x.2.ia64.rpm 
ftp://updates.Red Hat.com/7.2/en/os/ia64/vim-minimal-6.1-18.7x.2.ia64.rpm 
ftp://updates.Red Hat.com/7.2/en/os/ia64/vim-enhanced-6.1-18.7x.2.ia64.rpm 
ftp://updates.Red Hat.com/7.2/en/os/ia64/vim-X11-6.1-18.7x.2.ia64.rpm

Red Hat Linux 7.3:

SRPMS: 
ftp://updates.Red Hat.com/7.3/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm

i386: 
ftp://updates.Red Hat.com/7.3/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.3/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.3/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm 
ftp://updates.Red Hat.com/7.3/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm

Red Hat Linux 8.0:

SRPMS: 
ftp://updates.Red Hat.com/8.0/en/os/SRPMS/vim-6.1-18.8x.1.src.rpm

i386: 
ftp://updates.Red Hat.com/8.0/en/os/i386/vim-common-6.1-18.8x.1.i386.rpm 
ftp://updates.Red Hat.com/8.0/en/os/i386/vim-minimal-6.1-18.8x.1.i386.rpm 
ftp://updates.Red Hat.com/8.0/en/os/i386/vim-enhanced-6.1-18.8x.1.i386.rpm 
ftp://updates.Red Hat.com/8.0/en/os/i386/vim-X11-6.1-18.8x.1.i386.rpm



6. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
e9f881277e228d8fa236a62a4708c4cc 6.2/en/os/SRPMS/vim-6.1-18.6x.3.src.rpm
0e1ab8d86a448125d0d7ca46d4d03ce9 6.2/en/os/i386/vim-X11-6.1-18.6x.3.i386.rpm
f591194bc8b067e9b17c128f41438c9c 6.2/en/os/i386/vim-common-6.1-18.6x.3.i386.rpm
2ffa90ad19b84cea780fbf97ba7f041e 6.2/en/os/i386/vim-enhanced-6.1-18.6x.3.i386.rpm
cb3efa24eb8918f84d01102389e46c75 6.2/en/os/i386/vim-minimal-6.1-18.6x.3.i386.rpm
4577eb89b6c01717928cbbba1e8e8d1f 7.0/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm
1ec98d3dae05d1b054130e39763ea992 7.0/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm
90ec6d2b9129dfce14b7cec28b01a155 7.0/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm
732a4a8c7e45a24dab4713582ecdd197 7.0/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm
e310b4b5a4fc1fc17d6e7389b0093c44 7.0/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm
4577eb89b6c01717928cbbba1e8e8d1f 7.1/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm
1ec98d3dae05d1b054130e39763ea992 7.1/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm
90ec6d2b9129dfce14b7cec28b01a155 7.1/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm
732a4a8c7e45a24dab4713582ecdd197 7.1/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm
e310b4b5a4fc1fc17d6e7389b0093c44 7.1/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm
4577eb89b6c01717928cbbba1e8e8d1f 7.2/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm
1ec98d3dae05d1b054130e39763ea992 7.2/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm
90ec6d2b9129dfce14b7cec28b01a155 7.2/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm
732a4a8c7e45a24dab4713582ecdd197 7.2/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm
e310b4b5a4fc1fc17d6e7389b0093c44 7.2/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm
b0f8f9b715b76081f9eb6cfa8be4d66b 7.2/en/os/ia64/vim-X11-6.1-18.7x.2.ia64.rpm
dde9fb8c41834ed2851e625baf8021fe 7.2/en/os/ia64/vim-common-6.1-18.7x.2.ia64.rpm
7d99e5d8c7acbee0e76c46d094a7c8a7 7.2/en/os/ia64/vim-enhanced-6.1-18.7x.2.ia64.rpm
2fe4f373692275e58f692c89f04bacaa 7.2/en/os/ia64/vim-minimal-6.1-18.7x.2.ia64.rpm
4577eb89b6c01717928cbbba1e8e8d1f 7.3/en/os/SRPMS/vim-6.1-18.7x.2.src.rpm
1ec98d3dae05d1b054130e39763ea992 7.3/en/os/i386/vim-X11-6.1-18.7x.2.i386.rpm
90ec6d2b9129dfce14b7cec28b01a155 7.3/en/os/i386/vim-common-6.1-18.7x.2.i386.rpm
732a4a8c7e45a24dab4713582ecdd197 7.3/en/os/i386/vim-enhanced-6.1-18.7x.2.i386.rpm
e310b4b5a4fc1fc17d6e7389b0093c44 7.3/en/os/i386/vim-minimal-6.1-18.7x.2.i386.rpm
7662f8b82c03dc12af971abc7eec166c 8.0/en/os/SRPMS/vim-6.1-18.8x.1.src.rpm
0b19e93621c1a3bc34d8cbff32409c5b 8.0/en/os/i386/vim-X11-6.1-18.8x.1.i386.rpm
290188637a0f61a80e39954c9e8f3850 8.0/en/os/i386/vim-common-6.1-18.8x.1.i386.rpm
48a8bdfe8a6460c2f0498275f813dc97 8.0/en/os/i386/vim-enhanced-6.1-18.8x.1.i386.rpm
da89d37820bc1441f51310ca93edf62a 8.0/en/os/i386/vim-minimal-6.1-18.8x.1.i386.rpm


These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at  http://www.Red Hat.com/about/contact/pgpkey.html

You can verify each package with the following command:
    
    rpm --checksig -v 

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 


7. References:
 
http://www.guninski.com/vim1.html 
http://marc.theaimsgroup.com/?l=full-disclosure&m=103972417823566 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1377

8. Contact:

The Red Hat security contact is <security@Red Hat.com>.  More contact
details at  http://www.Red Hat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.



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