Articles / Red Hat: Updated krb5 packa…

Red Hat: Updated krb5 packages fix remote buffer overflow

Sun RPC is a remote procedure call framework which allows clients to invoke procedures in a server process over a network. XDR is a mechanism for encoding data structures for use with RPC. The Kerberos 5 network authentication system contains an RPC library which includes an XDR decoder derived from Sun's RPC implementation. The Sun implementation was recently demonstrated to be vulnerable to a heap overflow. It is believed that the attacker needs to be able to authenticate to the kadmin daemon for this attack to be successful. No exploits are known to currently exist. Fixed packages can be obtained from updates.redhat.com.
---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated krb5 packages fix remote buffer overflow
Advisory ID:       RHSA-2002:172-07
Issue date:        2002-08-02
Updated on:        2002-08-14
Product:           Red Hat Linux
Keywords:          
Cross references:  RHSA-2002:173
Obsoletes:         
CVE Names:         CAN-2002-0391
---------------------------------------------------------------------

1. Topic:

Updated Kerberos 5 packages are now available for Red Hat LInux 6.2, 7,
7.1, 7.2, and 7.3.  These updates fix a buffer overflow in the XDR decoder.

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:

Sun RPC is a remote procedure call framework which allows clients to invoke
procedures in a server process over a network.  XDR is a mechanism for
encoding data structures for use with RPC.  

The Kerberos 5 network authentication system contains an RPC library which
includes an XDR decoder derived from Sun's RPC implementation. The Sun
implementation was recently demonstrated to be vulnerable to a heap
overflow.  It is believed that the attacker needs to be able to
authenticate to the kadmin daemon for this attack to be successful.  No
exploits are known to currently exist.

All users should upgrade to these errata packages which contain an updated
version of Kerberos 5 which is 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:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.0

5. RPMs required:

Red Hat Linux 6.2:

SRPMS:
ftp://updates.redhat.com/6.2/en/os/SRPMS/krb5-1.1.1-29.src.rpm

alpha:
ftp://updates.redhat.com/6.2/en/os/alpha/krb5-configs-1.1.1-29.alpha.rpm
ftp://updates.redhat.com/6.2/en/os/alpha/krb5-workstation-1.1.1-29.alpha.rpm
ftp://updates.redhat.com/6.2/en/os/alpha/krb5-server-1.1.1-29.alpha.rpm
ftp://updates.redhat.com/6.2/en/os/alpha/krb5-libs-1.1.1-29.alpha.rpm
ftp://updates.redhat.com/6.2/en/os/alpha/krb5-devel-1.1.1-29.alpha.rpm

i386:
ftp://updates.redhat.com/6.2/en/os/i386/krb5-configs-1.1.1-29.i386.rpm
ftp://updates.redhat.com/6.2/en/os/i386/krb5-workstation-1.1.1-29.i386.rpm
ftp://updates.redhat.com/6.2/en/os/i386/krb5-server-1.1.1-29.i386.rpm
ftp://updates.redhat.com/6.2/en/os/i386/krb5-libs-1.1.1-29.i386.rpm
ftp://updates.redhat.com/6.2/en/os/i386/krb5-devel-1.1.1-29.i386.rpm

sparc:
ftp://updates.redhat.com/6.2/en/os/sparc/krb5-configs-1.1.1-29.sparc.rpm
ftp://updates.redhat.com/6.2/en/os/sparc/krb5-workstation-1.1.1-29.sparc.rpm
ftp://updates.redhat.com/6.2/en/os/sparc/krb5-server-1.1.1-29.sparc.rpm
ftp://updates.redhat.com/6.2/en/os/sparc/krb5-libs-1.1.1-29.sparc.rpm
ftp://updates.redhat.com/6.2/en/os/sparc/krb5-devel-1.1.1-29.sparc.rpm

Red Hat Linux 7.0:

SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/krb5-1.2.2-14.src.rpm

alpha:
ftp://updates.redhat.com/7.0/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.0/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.0/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.0/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm

i386:
ftp://updates.redhat.com/7.0/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.0/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.0/en/os/i386/krb5-server-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.0/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm

Red Hat Linux 7.1:

SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/krb5-1.2.2-14.src.rpm

alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.1/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.1/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm
ftp://updates.redhat.com/7.1/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm

i386:
ftp://updates.redhat.com/7.1/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i386/krb5-server-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm

ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.1/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.1/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.1/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/krb5-1.2.2-14.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i386/krb5-server-1.2.2-14.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/krb5-1.2.4-2.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i386/krb5-devel-1.2.4-2.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i386/krb5-libs-1.2.4-2.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i386/krb5-server-1.2.4-2.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i386/krb5-workstation-1.2.4-2.i386.rpm



6. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
877c253289b1838c0af51de263efbce2 6.2/en/os/SRPMS/krb5-1.1.1-29.src.rpm
293e9901801a9b7c93994203cb7c5fa9 6.2/en/os/alpha/krb5-configs-1.1.1-29.alpha.rpm
44308ad6599a4145c9ca0f4038d4bcbc 6.2/en/os/alpha/krb5-devel-1.1.1-29.alpha.rpm
ed5492fd6e45b8fee9895dcff61363d6 6.2/en/os/alpha/krb5-libs-1.1.1-29.alpha.rpm
dfc12d8135f183eb1d98e600e21f01fb 6.2/en/os/alpha/krb5-server-1.1.1-29.alpha.rpm
e7f346040bf9e3c42fd853d69cb2ef78 6.2/en/os/alpha/krb5-workstation-1.1.1-29.alpha.rpm
9345dc3a7a579a021061bca74e6b640a 6.2/en/os/i386/krb5-configs-1.1.1-29.i386.rpm
84c97facbf59bb70dde668187fefab4c 6.2/en/os/i386/krb5-devel-1.1.1-29.i386.rpm
972ec31e6103e145a1672618b9971d3e 6.2/en/os/i386/krb5-libs-1.1.1-29.i386.rpm
23f8f5f75850208b2d40dd10dc9927b5 6.2/en/os/i386/krb5-server-1.1.1-29.i386.rpm
4a6395c671391ed1fee6ea9e9ee33065 6.2/en/os/i386/krb5-workstation-1.1.1-29.i386.rpm
50b52160b0700d3384cf86371f7b374b 6.2/en/os/sparc/krb5-configs-1.1.1-29.sparc.rpm
a82f945159c05141439de0df43bb25ed 6.2/en/os/sparc/krb5-devel-1.1.1-29.sparc.rpm
ddcf9b4fec32e0f93da1806eb8cd72ba 6.2/en/os/sparc/krb5-libs-1.1.1-29.sparc.rpm
db06836719bd389f056259ac3af63131 6.2/en/os/sparc/krb5-server-1.1.1-29.sparc.rpm
f99f0d9bdc7ec03c99591cf8168b93b9 6.2/en/os/sparc/krb5-workstation-1.1.1-29.sparc.rpm
1703c67f82b8feaa0f76efce9ddf17d9 7.0/en/os/SRPMS/krb5-1.2.2-14.src.rpm
f3e7ce965fafdec10fdad015fa7d079f 7.0/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm
2a98e1de18a262a3fa4fbe33bf61cf7d 7.0/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm
49f5808a9a778fab780456f7c54d8e7b 7.0/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm
8ad075c29413edacd36fa86789a20c93 7.0/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm
96bf320130172f0ed00eeec4f7543bff 7.0/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
a76356c93f518ce52f8ed678eff39ea6 7.0/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
7eac994af1d0b1a0d913755dcd2931af 7.0/en/os/i386/krb5-server-1.2.2-14.i386.rpm
d80a32bde5d7eacc3b6fc2418aa6f5d8 7.0/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm
1703c67f82b8feaa0f76efce9ddf17d9 7.1/en/os/SRPMS/krb5-1.2.2-14.src.rpm
f3e7ce965fafdec10fdad015fa7d079f 7.1/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm
2a98e1de18a262a3fa4fbe33bf61cf7d 7.1/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm
49f5808a9a778fab780456f7c54d8e7b 7.1/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm
8ad075c29413edacd36fa86789a20c93 7.1/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm
96bf320130172f0ed00eeec4f7543bff 7.1/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
a76356c93f518ce52f8ed678eff39ea6 7.1/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
7eac994af1d0b1a0d913755dcd2931af 7.1/en/os/i386/krb5-server-1.2.2-14.i386.rpm
d80a32bde5d7eacc3b6fc2418aa6f5d8 7.1/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm
e81bea51555ea322fe31891bd04a7a0e 7.1/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm
731a101f76a2797a3ea4b896fed78049 7.1/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm
16958f16d12b91c522ec50a50cd66a75 7.1/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm
d364eac9c4feedfe0c6efc3eb7be1555 7.1/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm
1703c67f82b8feaa0f76efce9ddf17d9 7.2/en/os/SRPMS/krb5-1.2.2-14.src.rpm
96bf320130172f0ed00eeec4f7543bff 7.2/en/os/i386/krb5-devel-1.2.2-14.i386.rpm
a76356c93f518ce52f8ed678eff39ea6 7.2/en/os/i386/krb5-libs-1.2.2-14.i386.rpm
7eac994af1d0b1a0d913755dcd2931af 7.2/en/os/i386/krb5-server-1.2.2-14.i386.rpm
d80a32bde5d7eacc3b6fc2418aa6f5d8 7.2/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm
e81bea51555ea322fe31891bd04a7a0e 7.2/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm
731a101f76a2797a3ea4b896fed78049 7.2/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm
16958f16d12b91c522ec50a50cd66a75 7.2/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm
d364eac9c4feedfe0c6efc3eb7be1555 7.2/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm
a809b04a80d7ea5bfc25d192b4eec681 7.3/en/os/SRPMS/krb5-1.2.4-2.src.rpm
a4a6a6904a2be6da0e68b1b176ed2b9b 7.3/en/os/i386/krb5-devel-1.2.4-2.i386.rpm
2fa946892a8194411500594d48706411 7.3/en/os/i386/krb5-libs-1.2.4-2.i386.rpm
a5a79b11ba6ef0e9e3f88603c6ac95a6 7.3/en/os/i386/krb5-server-1.2.4-2.i386.rpm
863c43cef0cddb45cb79f9539e824024 7.3/en/os/i386/krb5-workstation-1.2.4-2.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  

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 


7. References:

http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2002-001-xdr.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0391


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