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RedHat: 'gnupg' format string vulnerability Print E-mail
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Posted by Team   
RedHat Linux Updated GnuPG packages are now available for Red Hat Linux 6.2, 7, and 7.1.These updates include fixes for the recently-discovered format stringvulnerability.

                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated GnuPG packages available
Advisory ID:       RHSA-2001:073-04
Issue date:        2001-05-30
Updated on:        2001-06-07
Product:           Red Hat Linux
Keywords:          gnupg format string
Cross references:  
Obsoletes:         RHSA-2001:063

1. Topic:

Updated GnuPG packages are now available for Red Hat Linux 6.2, 7, and 7.1.

These updates include fixes for the recently-discovered format string

2. Relevant releases/architectures:

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

Red Hat Linux 7.1 - i386

3. Problem description:

Versions of GnuPG up to and including 1.0.5 include a format string
vulnerability.  In some cases, this can lead to compromise of an account
being used to decrypt an encrypted file.

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:


This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

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

42674 - gnupg 1.0.6 out, fixing format string exploit

6. RPMs required:

Red Hat Linux 6.2:





Red Hat Linux 7.0:




Red Hat Linux 7.1:



7. Verification:

MD5 sum                           Package Name
b2046048050eecd78b51846900294168 6.2/en/os/SRPMS/gnupg-1.0.6-0.6.x.src.rpm
31b8f7719b4ae95a930aeb291a8cd64a 6.2/en/os/alpha/gnupg-1.0.6-0.6.x.alpha.rpm
6a79e3e9f0b7d45ae6ac7dc3296c4277 6.2/en/os/i386/gnupg-1.0.6-0.6.x.i386.rpm
36fee998e3e74d36d46f8f7099b6f2ac 6.2/en/os/sparc/gnupg-1.0.6-0.6.x.sparc.rpm
95aa4c72a640b4badfa6462ee7ea61c1 7.0/en/os/SRPMS/gnupg-1.0.6-1.src.rpm
de001c49c523c54369bb067ee3db40d0 7.0/en/os/alpha/gnupg-1.0.6-1.alpha.rpm
06dea237f91666032224592e2af68894 7.0/en/os/i386/gnupg-1.0.6-1.i386.rpm
95aa4c72a640b4badfa6462ee7ea61c1 7.1/en/os/SRPMS/gnupg-1.0.6-1.src.rpm
06dea237f91666032224592e2af68894 7.1/en/os/i386/gnupg-1.0.6-1.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:

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:

Copyright(c) 2000, 2001 Red Hat, Inc.

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