ircii buffer overflow

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              AUSCERT External Security Bulletin Redistribution
                             
                      ESB-2000.060 -- RHSA-2000:008-01
                            ircii buffer overflow
                                31 March 2000

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

Red Hat, Inc. has released the following advisory concerning a
vulnerability in ircii's dcc chat capability. This vulnerability may allow
a remote user to execute code as the user of the ircii client.

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                   Red Hat, Inc. Security Advisory

Synopsis:          ircii buffer overflow
Advisory ID:       RHSA-2000:008-01
Issue date:        2000-03-29
Updated on:        2000-03-29
Product:           Red Hat Linux
Keywords:          N/A
Cross references:  ircii 4.4M buffer dcc
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1. Topic:

A buffer overflow exists in ircii,

2. Relevant releases/architectures:

Red Hat Linux 4.2 - i386 alpha sparc
Red Hat Linux 5.2 - i386 alpha sparc
Red Hat Linux 6.0 - i386 alpha sparc
Red Hat Linux 6.1 - i386 alpha sparc
Red Hat Linux 6.2 - i386 sparc


3. Problem description:

A buffer overflow exists in ircii's dcc chat capability.
An attacker could use this overflow to execute code
as the user of ircii.

It is recommended that users of ircii update to the
fixed pacakges:

Compatibility note: ircii's library directory has
moved from /usr/lib/irc to /usr/share/irc.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

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

10339 - ircii overflow bug. please upgrade ircii. again.


6. Obsoleted by:

N/A

7. Conflicts with:

N/A

8. RPMs required:


Red Hat Linux 4.2:

intel:
ftp://updates.redhat.com/4.2/i386/ircii-4.4M-0.4.2.i386.rpm

alpha:
ftp://updates.redhat.com/4.2/alpha/ircii-4.4M-0.4.2.alpha.rpm

sparc:
ftp://updates.redhat.com/4.2/sparc/ircii-4.4M-0.4.2.sparc.rpm

sources:
ftp://updates.redhat.com/4.2/SRPMS/ircii-4.4M-0.4.2.src.rpm

Red Hat Linux 5.2:

intel:
ftp://updates.redhat.com/5.2/i386/ircii-4.4M-0.5.2.i386.rpm

alpha:
ftp://updates.redhat.com/5.2/alpha/ircii-4.4M-0.5.2.alpha.rpm

sparc:
ftp://updates.redhat.com/5.2/sparc/ircii-4.4M-0.5.2.sparc.rpm

sources:
ftp://updates.redhat.com/5.2/SRPMS/ircii-4.4M-0.5.2.src.rpm

Red Hat Linux 6.2:

intel:
ftp://updates.redhat.com/6.2/i386/ircii-4.4M-1.i386.rpm

sparc:
ftp://updates.redhat.com/6.2/sparc/ircii-4.4M-1.sparc.rpm

sources:
ftp://updates.redhat.com/6.2/SRPMS/ircii-4.4M-1.src.rpm


9. Verification:

MD5 sum                           Package Name
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e9cb2195648bf1cc55e00b28f98b090e  5.2/sparc/ircii-4.4M-0.5.2.sparc.rpm
73c9eb162c48a162c2f5ef8c625fba53  4.2/i386/ircii-4.4M-0.4.2.i386.rpm
e44491fe29858c1884196a0cd40fc60d  6.2/i386/ircii-4.4M-1.i386.rpm
324779062a29903f3c2fff581c620425  5.2/i386/ircii-4.4M-0.5.2.i386.rpm
dfed6e42c23064d6b6af88b83c45d67d  4.2/alpha/ircii-4.4M-0.4.2.alpha.rpm
122d90adde4e18db9f7c69143a4334e1  4.2/SRPMS/ircii-4.4M-0.4.2.src.rpm
95c765b3fb7c76dc7d2de1fe1853e3ca  6.2/SRPMS/ircii-4.4M-1.src.rpm
ca748c0df16cda0de83c21b53eb48351  5.2/alpha/ircii-4.4M-0.5.2.alpha.rpm
a14830ab1d939150e7cb38ab57eecfed  5.2/SRPMS/ircii-4.4M-0.5.2.src.rpm
be7db62bbab9c34801f7c1e08983f34e  4.2/sparc/ircii-4.4M-0.4.2.sparc.rpm
a759d5ea66514b4e12e59a8c173d65d9  6.2/sparc/ircii-4.4M-1.sparc.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>

10. References:

http://www.securityfocus.com/vdb/bottom.html?vid=1046

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