-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                     ESB-2001.117 -- RHSA-2001:028-02
                          buffer overflow in slrn
                               16 March 2001

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                slrn
Vendor:                 Red Hat
Operating System:       Red Hat Linux
                        Linux
Platform:               Alpha
                        i386
                        Sparc
Impact:                 Execute Arbitrary Code/Commands
Access Required:        Remote

- --------------------------BEGIN INCLUDED TEXT--------------------

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

Synopsis:          buffer overflow in slrn
Advisory ID:       RHSA-2001:028-02
Issue date:        2001-03-09
Updated on:        2001-03-13
Product:           Red Hat Linux
Keywords:          slrn wrap overflow
Cross references:  
Obsoletes:         
- ---------------------------------------------------------------------

1. Topic:

An overflow exists in the slrn pacakge as shipped in Red Hat Linux
7 and Red Hat Linux 6.x, which could possibly lead to remote users
executing arbitrary code as the user running slrn.

It is recommended that all users of slrn update to the fixed packages.
Users of Red Hat Linux 6.0 or 6.1 should use the packages
for Red Hat Linux 6.2.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

3. Problem description:

An overflow exists in the article wrapping code for slrn. By
posting a carefully constructed article, it would be theoretically
possible for a remote user to execute arbitrary code as the user
running slrn.

No know *exploits* of this overflow have been reported, but articles
that will cause slrn to crash do exist.

4. Solution:

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 directly *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):



6. RPMs required:

Red Hat Linux 6.2:

SRPMS:
ftp://updates.redhat.com/6.2/SRPMS/slrn-0.9.6.4-0.6.src.rpm

alpha:
ftp://updates.redhat.com/6.2/alpha/slrn-0.9.6.4-0.6.alpha.rpm
ftp://updates.redhat.com/6.2/alpha/slrn-pull-0.9.6.4-0.6.alpha.rpm

i386:
ftp://updates.redhat.com/6.2/i386/slrn-0.9.6.4-0.6.i386.rpm
ftp://updates.redhat.com/6.2/i386/slrn-pull-0.9.6.4-0.6.i386.rpm

sparc:
ftp://updates.redhat.com/6.2/sparc/slrn-0.9.6.4-0.6.sparc.rpm
ftp://updates.redhat.com/6.2/sparc/slrn-pull-0.9.6.4-0.6.sparc.rpm

Red Hat Linux 7.0:

SRPMS:
ftp://updates.redhat.com/7.0/SRPMS/slrn-0.9.6.4-0.7.src.rpm

alpha:
ftp://updates.redhat.com/7.0/alpha/slrn-0.9.6.4-0.7.alpha.rpm
ftp://updates.redhat.com/7.0/alpha/slrn-pull-0.9.6.4-0.7.alpha.rpm

i386:
ftp://updates.redhat.com/7.0/i386/slrn-0.9.6.4-0.7.i386.rpm
ftp://updates.redhat.com/7.0/i386/slrn-pull-0.9.6.4-0.7.i386.rpm



7. Verification:

MD5 sum                           Package Name
- --------------------------------------------------------------------------
df1d6c939fae603944e709fd27eed71b  6.2/SRPMS/slrn-0.9.6.4-0.6.src.rpm
3854e2cee9e299a551d3f6a45f463f05  6.2/alpha/slrn-0.9.6.4-0.6.alpha.rpm
37dce6b561e524f16f3c54f33564cc27  6.2/alpha/slrn-pull-0.9.6.4-0.6.alpha.rpm
81479f270bf2539b665115dabbb2c3d1  6.2/i386/slrn-0.9.6.4-0.6.i386.rpm
e160f67aae0c45e533de818569a64c8d  6.2/i386/slrn-pull-0.9.6.4-0.6.i386.rpm
2d76f003a45504f55afda015f63ad0e2  6.2/sparc/slrn-0.9.6.4-0.6.sparc.rpm
40c5ed228ae52c26a1ca687b7d929177  6.2/sparc/slrn-pull-0.9.6.4-0.6.sparc.rpm
1793d468092db5b40f66b388f5e36a3b  7.0/SRPMS/slrn-0.9.6.4-0.7.src.rpm
01d6a50b5c2817066385d1621c259510  7.0/alpha/slrn-0.9.6.4-0.7.alpha.rpm
ba4c76bad2540e37f8fa5f292a2641ae  7.0/alpha/slrn-pull-0.9.6.4-0.7.alpha.rpm
dd601a7324b5589326a5d92d3d2ee27f  7.0/i386/slrn-0.9.6.4-0.7.i386.rpm
d49c0b47e967bd9abdb7fec655b8e3ff  7.0/i386/slrn-pull-0.9.6.4-0.7.i386.rpm

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




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



_______________________________________________
Redhat-watch-list mailing list
To unsubscribe, visit: https://listman.redhat.com/mailman/listinfo/redhat-watch-list


- --------------------------END INCLUDED TEXT--------------------

This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content.  The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBOrI8kCh9+71yA2DNAQFtbQQAnitaUylHr14ihm+FmjPFEVvIqpFhKxj+
0sK3xULGpkw4IqBZAExQkbLwRHuagNm9LCLAki/qc9dGdgmxrrGP8Bt7y6w0Xj9j
E9U8dwuxXcwMq/1/IkF3BtxfuKtmEJlhp3gDZIEXvUmaIEjeCmELcM91Cse/EhIW
Om3wT7Wn6YE=
=diHt
-----END PGP SIGNATURE-----