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From: bugzilla at (
Subject: [RHSA-2002:212-06] Updated packages fix PostScript and PDF security issue

                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated packages fix PostScript and PDF security issue
Advisory ID:       RHSA-2002:212-06
Issue date:        2002-09-25
Updated on:        2002-09-30
Product:           Red Hat Powertools
Keywords:          pdf adobe postscript exploit
Cross references:  
CVE Names:         CAN-2002-0838

1. Topic:

Updated packages for ggv fix a local buffer overflow
when reading malformed PDF or PostScript files.

2. Relevant releases/architectures:

Red Hat Powertools 7.0 - alpha, i386
Red Hat Powertools 7.1 - alpha, i386

3. Problem description:

ggv is a user interface for the Ghostscript PostScript(R) interpreter used
to display PostScript and PDF documents on an X Window System.

Zen Parse found a local buffer overflow in gv version 3.5.8 and earlier. 
ggv versions 1.0.2 and earlier contain code derived from gv and therefore
have the same vulnerability. An attacker can create a carefully crafted
malformed PDF or PostScript file in such a way that when that file is
viewed arbitrary commands can be executed.

All users of ggv are advised to upgrade to the errata packages which
contain a patch and are not vulnerable to this issue.

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. RPMs required:

Red Hat Powertools 7.0:




Red Hat Powertools 7.1:




6. Verification:

MD5 sum                          Package Name
c0915e40e1d512174f9c2f024399e866 7.0/en/powertools/SRPMS/ggv-1.0.2-5.1.src.rpm
2f105b4be32d361cb5477d04f2a2fbba 7.0/en/powertools/alpha/ggv-1.0.2-5.1.alpha.rpm
afd4eab8f18ca4f03ead7c4025f99ab1 7.0/en/powertools/i386/ggv-1.0.2-5.1.i386.rpm
c0915e40e1d512174f9c2f024399e866 7.1/en/powertools/SRPMS/ggv-1.0.2-5.1.src.rpm
2f105b4be32d361cb5477d04f2a2fbba 7.1/en/powertools/alpha/ggv-1.0.2-5.1.alpha.rpm
afd4eab8f18ca4f03ead7c4025f99ab1 7.1/en/powertools/i386/ggv-1.0.2-5.1.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  <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:
    rpm --checksig --nogpg <filename>

7. References:

Copyright(c) 2000, 2001, 2002 Red Hat, Inc.

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