Red Hat: 'slocate' heap overflow
Posted by LinuxSecurity.com Team   
RedHat Linux By using a carefully crafted database, a local user could overwrite some of slocate's internal structures, leading to a local group slocate compromise.

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

Synopsis:          New slocate packages available to fix local group slocate
compromise
Advisory ID:       RHSA-2000:128-02
Issue date:        2000-12-19
Updated on:        2000-12-19
Product:           Red Hat Linux
Keywords:          slocate heap overflow
Cross references:  
---------------------------------------------------------------------

1. Topic:

New slocate packages are availble for Red Hat Linux 6.x and Red Hat
Linux 7. These fix a problem with the database parsing code in slocate.
(slocate was not shipped with Red Hat Linux prior to version 6.0, so
earlier versions are not affected.)

2. Relevant releases/architectures:

Red Hat Linux 6.0 - alpha, i386, sparc

Red Hat Linux 6.1 - alpha, i386, sparc

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

3. Problem description:

A problem existed in the slocate database parsing code. By using a
carefully
crafted database, a local user could overwrite some of slocate's internal
structures, leading to a local group slocate compromise.

The affect of this compromise is that users could read the entire slocate
database, and therefore learn the locations of files that they normally
would not have permissions to locate.

Thanks to Michel Kaempf, zorgon@linuxstart.com, and Michal Zalewski
for pointing out the vulnerability.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):

21388 - heap corruption vulnerability

6. RPMs required:

Red Hat Linux 6.0:

SRPMS: 
ftp://updates.Red Hat.com//6.0/SRPMS/slocate-2.4-0.6.x.src.rpm

alpha: 
ftp://updates.Red Hat.com//6.0/alpha/slocate-2.4-0.6.x.alpha.rpm

i386: 
ftp://updates.Red Hat.com//6.0/i386/slocate-2.4-0.6.x.i386.rpm

sparc: 
ftp://updates.Red Hat.com//6.0/sparc/slocate-2.4-0.6.x.sparc.rpm

Red Hat Linux 6.1:

SRPMS: 
ftp://updates.Red Hat.com//6.1/SRPMS/slocate-2.4-0.6.x.src.rpm

alpha: 
ftp://updates.Red Hat.com//6.1/alpha/slocate-2.4-0.6.x.alpha.rpm 
ftp://updates.Red Hat.com//6.1/alpha/slocate-2.4-0.6.x.alpha.rpm 
ftp://updates.Red Hat.com//6.1/alpha/slocate-2.4-0.6.x.alpha.rpm

i386: 
ftp://updates.Red Hat.com//6.1/i386/slocate-2.4-0.6.x.i386.rpm

sparc: 
ftp://updates.Red Hat.com//6.1/sparc/slocate-2.4-0.6.x.sparc.rpm

Red Hat Linux 6.2:

SRPMS: 
ftp://updates.Red Hat.com//6.2/SRPMS/slocate-2.4-0.6.x.src.rpm 
ftp://updates.Red Hat.com//6.2/SRPMS/slocate-2.4-0.6.x.src.rpm 
ftp://updates.Red Hat.com//6.2/SRPMS/slocate-2.4-0.6.x.src.rpm 
ftp://updates.Red Hat.com//6.2/SRPMS/slocate-2.4-1.src.rpm

alpha: 
ftp://updates.Red Hat.com//6.2/alpha/slocate-2.4-0.6.x.alpha.rpm

i386: 
ftp://updates.Red Hat.com//6.2/i386/slocate-2.4-0.6.x.i386.rpm

sparc: 
ftp://updates.Red Hat.com//6.2/sparc/slocate-2.4-0.6.x.sparc.rpm

Red Hat Linux 7.0:

SRPMS: 
ftp://updates.Red Hat.com//7.0/SRPMS/slocate-2.4-1.src.rpm

alpha: 
ftp://updates.Red Hat.com//7.0/alpha/slocate-2.4-1.alpha.rpm

i386: 
ftp://updates.Red Hat.com//7.0/i386/slocate-2.4-1.i386.rpm



7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
ba211d65172160c4a6cba5a65bd93f60  6.0/alpha/slocate-2.4-0.6.x.alpha.rpm
 8b63c4c1fec7759f79559a616c5f15e9  6.0/i386/slocate-2.4-0.6.x.i386.rpm
 eeea0298b59fdfa6e475ee732a385942  6.0/sparc/slocate-2.4-0.6.x.sparc.rpm
 ba211d65172160c4a6cba5a65bd93f60  6.1/alpha/slocate-2.4-0.6.x.alpha.rpm
 8b63c4c1fec7759f79559a616c5f15e9  6.1/i386/slocate-2.4-0.6.x.i386.rpm
 eeea0298b59fdfa6e475ee732a385942  6.1/sparc/slocate-2.4-0.6.x.sparc.rpm
 ba211d65172160c4a6cba5a65bd93f60  6.2/alpha/slocate-2.4-0.6.x.alpha.rpm
 8b63c4c1fec7759f79559a616c5f15e9  6.2/i386/slocate-2.4-0.6.x.i386.rpm
 eeea0298b59fdfa6e475ee732a385942  6.2/sparc/slocate-2.4-0.6.x.sparc.rpm
 5ee5ec5f65e200e9d03f4d2dda43ce07  7.0/alpha/slocate-2.4-1.alpha.rpm
 ba3b1c1743ec957cb8abb05818e05854  7.0/i386/slocate-2.4-1.i386.rpm
 53abff41632acc6764c14ba59384cf84  6.0/SRPMS/slocate-2.4-0.6.x.src.rpm
 53abff41632acc6764c14ba59384cf84  6.1/SRPMS/slocate-2.4-0.6.x.src.rpm
 53abff41632acc6764c14ba59384cf84  6.2/SRPMS/slocate-2.4-0.6.x.src.rpm
 2672ef24c8ca7afbcb6a327622d71c42  7.0/SRPMS/slocate-2.4-1.src.rpm

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

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

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

8. References:
 
http://www.securityfocus.com/bid/2004


Copyright(c) 2000 Red Hat, Inc.