AUSCERT External Security Bulletin Redistribution

         ESB-2002.298 -- FreeBSD Security Notice FreeBSD-SN-02:04
                     Security issues in ports including 
               Apache Web Server chunk handling vulnerability
                               20 June 2002


        AusCERT Security Bulletin Summary

Product:                Apache Web Server
Operating System:       FreeBSD

Ref:                    AA-2002.04

Comments:               This advisory contains information regarding the 
                        recent Apache Web Server chunk handling 

                        This is the new format for FreeBSD Ports security
                        notices.  Each port listed has its own vendor

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FreeBSD-SN-02:04                                              Security Notice
                                                          The FreeBSD Project

Topic:          security issues in ports
Announced:      2002-06-19

I.   Introduction

Several ports in the FreeBSD Ports Collection are affected by security
issues.  These are listed below with references and affected versions.
All versions given refer to the FreeBSD port/package version numbers.
The listed vulnerabilities are not specific to FreeBSD unless
otherwise noted.

These ports are not installed by default, nor are they ``part of
FreeBSD'' as such.  The FreeBSD Ports Collection contains thousands of
third-party applications in a ready-to-install format.  FreeBSD makes
no claim about the security of these third-party applications.  See
<URL:http://www.freebsd.org/ports/> for more information about the
FreeBSD Ports Collection.

II.  Ports

Port name:      apache13, apache13-modssl, apache13-ssl,
                apache13+ipv6, apache13-fp, apache2
Affected:       versions < apache-2.0.39 (apache2)
                versions < apache-1.3.26 (apache13)
		versions < apache+mod_ssl-1.3.26+2.8.9 (apache13-modssl)
                All versions (others)
Status:         Fixed (apache2, apache13, apache13-modssl)
                Not fixed (others)
Denial-of-service involving chunked encoding.
Port name:      bind9
Affected:       versions < bind9-9.2.1
Status:         Fixed
Denial-of-service vulnerability in named.
Port name:      courier-imap
Affected:       versions < courier-imap-1.4.3_1
Status:         Fixed
Remote denial-of-service attack (CPU utilization).
Port name:      ethereal
Affected:       versions < ethereal-0.9.4
Status:         Fixed
Buffer overflows in SMB, X11, DNS, and GIOP dissectors.
Port name:      fakebo
Affected:       versions < fakebo-0.4.1_1
Status:         Fixed
Format string vulnerability.
Port name:      fragroute
Affected:       versions < fragroute-1.2_1
Status:         Fixed
The distribution file with MD5 checksum 65edbfc51f8070517f14ceeb8f721075
was trojaned.
Port name:      ghostscript-gnu
Affected:       versions < ghostscript-6.53
Status:         Fixed
A PostScript file can cause arbitrary commands to be executed as
the user running ghostscript.
Port name:      icmpmonitor
Affected:       versions < icmpmonitor-1.11_1
Status:         Fixed
Format string vulnerability (syslog).
Port name:      imap-uw
Affected:       All versions
Status:         Not fixed
Locally exploitable stack buffer overflow when compiled with
WITH_RFC1730 (which is not the default).
Port name:      mnews
Affected:       All versions
Status:         Not fixed
Remotely exploitable buffer overflows.
Port name:      nn
Affected:       versions < nn-6.6.2_1
Status:         Fixed
Remotely exploitable format string vulnerability.
Reproduce using netcat:
  perl -e 'printf("100 %s
", "%x" x 800);' | nc -l -p 119
  env NNTPSERVER="localhost" nn
Port name:      sharity-light
Affected:       versions < sharity-light-1.2_1
Status:         Fixed
Stack buffer overflow when copying the username and password from the
environment (variables USER, LOGNAME, and PASSWD).  Reported by
Niels Heinen <niels.heinen@ubizen.com>.
Port name:      slurp
Affected:       versions < slurp-1.10_1
Status:         Fixed
Remotely exploitable format string vulnerability.
Port name:      xchat
Affected:       versions < xchat-1.8.9
Status:         Fixed
An IRC server may execute arbitrary commands with the privileges
of the user running xchat.

III. Upgrading Ports/Packages

To upgrade a fixed port/package, perform one of the following:

1) Upgrade your Ports Collection and rebuild and reinstall the port.
Several tools are available in the Ports Collection to make this
easier.  See:

2) Deinstall the old package and install a new package obtained from


Packages are not automatically generated for other architectures at
this time.

FreeBSD Security Notices are communications from the Security Officer
intended to inform the user community about potential security issues,
such as bugs in the third-party applications found in the Ports
Collection, which will not be addressed in a FreeBSD Security

Feedback on Security Notices is welcome at <security-officer@FreeBSD.org>.
Version: GnuPG v1.0.7 (FreeBSD)


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