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Redhat :Updated libpng packages fix bufferoverflow



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

                           Synopsis:          Updated libpng packages fix buffer overflow
                           Advisory ID:       RHSA-2002:151-21
                           Issue date:        2002-07-23
                           Updated on:        2002-08-14
                           Product:           Red Hat Linux
                           Keywords:          libpng buffer overflow IDAT IHDR
                           Cross references:  
                           Obsoletes:         
                           CVE Names:         CAN-2002-0728 CAN-2002-0660
                           ---------------------------------------------------------------------

                           1. Topic:

                           Updated libpng packages are available that fix a buffer overflow vulnerability.

                           2. Relevant releases/architectures:

                           Red Hat Linux 6.2 - alpha, i386, sparc

                           Red Hat Linux 7.0 - alpha, i386

                           Red Hat Linux 7.1 - alpha, i386, ia64

                           Red Hat Linux 7.2 - i386, ia64

                           Red Hat Linux 7.3 - i386

                           3. Problem description:

                           The libpng package contains a library of functions for creating and
                           manipulating PNG (Portable Network Graphics) image format files. PNG
                           is a bit-mapped graphics format similar to the GIF format. 

                           Versions of libpng prior to 1.0.14 contain a buffer overflow in the
                           progressive reader when the PNG datastream contains more IDAT data than
                           indicated by the IHDR chunk.  Such deliberately malformed datastreams would
                           crash applications that are linked to libpng and that use the progressive
                           reading feature. Mozilla is such an application.  (CAN-2002-0728)

                           Packages within Red Hat Linux, such as Mozilla, make use of the shared
                           libpng library. Therefore, all users are advised to upgrade to the errata
                           packages which contain libpng 1.0.14.  Libpng 1.0.14 is not vulnerable to
                           this issue and contains fixes for other bugs, including a number of memory
                           leaks and another potential buffer overflow (CAN-2002-0660)

                           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. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):

                           69716 - libpng security update

                           6. RPMs required:

                           Red Hat Linux 6.2:

                           SRPMS:
                           ftp://updates.redhat.com/6.2/en/os/SRPMS/libpng-1.0.14-0.6x.3.src.rpm

                           alpha:
                           ftp://updates.redhat.com/6.2/en/os/alpha/libpng-1.0.14-0.6x.3.alpha.rpm
                           ftp://updates.redhat.com/6.2/en/os/alpha/libpng-devel-1.0.14-0.6x.3.alpha.rpm

                           i386:
                           ftp://updates.redhat.com/6.2/en/os/i386/libpng-1.0.14-0.6x.3.i386.rpm
                           ftp://updates.redhat.com/6.2/en/os/i386/libpng-devel-1.0.14-0.6x.3.i386.rpm

                           sparc:
                           ftp://updates.redhat.com/6.2/en/os/sparc/libpng-1.0.14-0.6x.3.sparc.rpm
                           ftp://updates.redhat.com/6.2/en/os/sparc/libpng-devel-1.0.14-0.6x.3.sparc.rpm

                           Red Hat Linux 7.0:

                           SRPMS:
                           ftp://updates.redhat.com/7.0/en/os/SRPMS/libpng-1.0.14-0.70.1.src.rpm

                           alpha:
                           ftp://updates.redhat.com/7.0/en/os/alpha/libpng-1.0.14-0.70.1.alpha.rpm
                           ftp://updates.redhat.com/7.0/en/os/alpha/libpng-devel-1.0.14-0.70.1.alpha.rpm

                           i386:
                           ftp://updates.redhat.com/7.0/en/os/i386/libpng-1.0.14-0.70.1.i386.rpm
                           ftp://updates.redhat.com/7.0/en/os/i386/libpng-devel-1.0.14-0.70.1.i386.rpm

                           Red Hat Linux 7.1:

                           SRPMS:
                           ftp://updates.redhat.com/7.1/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm

                           alpha:
                           ftp://updates.redhat.com/7.1/en/os/alpha/libpng-1.0.14-0.7x.3.alpha.rpm
                           ftp://updates.redhat.com/7.1/en/os/alpha/libpng-devel-1.0.14-0.7x.3.alpha.rpm

                           i386:
                           ftp://updates.redhat.com/7.1/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           ftp://updates.redhat.com/7.1/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm

                           ia64:
                           ftp://updates.redhat.com/7.1/en/os/ia64/libpng-1.0.14-0.7x.3.ia64.rpm
                           ftp://updates.redhat.com/7.1/en/os/ia64/libpng-devel-1.0.14-0.7x.3.ia64.rpm

                           Red Hat Linux 7.2:

                           SRPMS:
                           ftp://updates.redhat.com/7.2/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm

                           i386:
                           ftp://updates.redhat.com/7.2/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           ftp://updates.redhat.com/7.2/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm

                           ia64:
                           ftp://updates.redhat.com/7.2/en/os/ia64/libpng-1.0.14-0.7x.3.ia64.rpm
                           ftp://updates.redhat.com/7.2/en/os/ia64/libpng-devel-1.0.14-0.7x.3.ia64.rpm

                           Red Hat Linux 7.3:

                           SRPMS:
                           ftp://updates.redhat.com/7.3/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm

                           i386:
                           ftp://updates.redhat.com/7.3/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           ftp://updates.redhat.com/7.3/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm



                           7. Verification:

                           MD5 sum                          Package Name
                           --------------------------------------------------------------------------
                           37e6d57dd31704b71feef50369c5e8ff 6.2/en/os/SRPMS/libpng-1.0.14-0.6x.3.src.rpm
                           3d3bd8f26bba979c6301392b67bbaa1c 6.2/en/os/alpha/libpng-1.0.14-0.6x.3.alpha.rpm
                           a12a60e72efd324e062577c6fbc169fa 6.2/en/os/alpha/libpng-devel-1.0.14-0.6x.3.alpha.rpm
                           d04060bc8a6b5af91fce003e8c0d5faa 6.2/en/os/i386/libpng-1.0.14-0.6x.3.i386.rpm
                           e404307047f3fd803203beeaefa7f6bf 6.2/en/os/i386/libpng-devel-1.0.14-0.6x.3.i386.rpm
                           f5145bfc2c3b1fd851faa973fe8acf54 6.2/en/os/sparc/libpng-1.0.14-0.6x.3.sparc.rpm
                           6c811458f9d1830a1a8a7ec488c90063 6.2/en/os/sparc/libpng-devel-1.0.14-0.6x.3.sparc.rpm
                           7dd1a3c2196fe6595a7eadd267b2cf81 7.0/en/os/SRPMS/libpng-1.0.14-0.70.1.src.rpm
                           17785632b35b332ae3422e96e41185be 7.0/en/os/alpha/libpng-1.0.14-0.70.1.alpha.rpm
                           a1c84380d5ed3feebce4cd800042b0e6 7.0/en/os/alpha/libpng-devel-1.0.14-0.70.1.alpha.rpm
                           5b0cc82f9cc13d020e84a685972b2d6e 7.0/en/os/i386/libpng-1.0.14-0.70.1.i386.rpm
                           97fc5a8ba5f9189ed31fa653efcbee94 7.0/en/os/i386/libpng-devel-1.0.14-0.70.1.i386.rpm
                           9d889338062ed3f54c274f8d287f8478 7.1/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm
                           8a83337f7161079002ea910996364fab 7.1/en/os/alpha/libpng-1.0.14-0.7x.3.alpha.rpm
                           529a2870130c849f71107401f1697d39 7.1/en/os/alpha/libpng-devel-1.0.14-0.7x.3.alpha.rpm
                           738be191bbe6ae286185cc7e03686c2b 7.1/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           e1b6c601e3469125617278a948eeea4f 7.1/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm
                           ebbb5938bf37b293ece898a59c889304 7.1/en/os/ia64/libpng-1.0.14-0.7x.3.ia64.rpm
                           6086069c4a7d5e85c5241f6b1d803aea 7.1/en/os/ia64/libpng-devel-1.0.14-0.7x.3.ia64.rpm
                           9d889338062ed3f54c274f8d287f8478 7.2/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm
                           738be191bbe6ae286185cc7e03686c2b 7.2/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           e1b6c601e3469125617278a948eeea4f 7.2/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm
                           ebbb5938bf37b293ece898a59c889304 7.2/en/os/ia64/libpng-1.0.14-0.7x.3.ia64.rpm
                           6086069c4a7d5e85c5241f6b1d803aea 7.2/en/os/ia64/libpng-devel-1.0.14-0.7x.3.ia64.rpm
                           9d889338062ed3f54c274f8d287f8478 7.3/en/os/SRPMS/libpng-1.0.14-0.7x.3.src.rpm
                           738be191bbe6ae286185cc7e03686c2b 7.3/en/os/i386/libpng-1.0.14-0.7x.3.i386.rpm
                           e1b6c601e3469125617278a948eeea4f 7.3/en/os/i386/libpng-devel-1.0.14-0.7x.3.i386.rpm


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

                           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>


                           8. References:

                           ftp://swrinde.nde.swri.edu/pub/png-group/archives/png-list.200207
                           http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0728
                           http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0660


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