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ESB-2010.0093 - [UNIX/Linux][Debian] hybserv: Denial of service - Remote/unauthenticated

Date: 01 February 2010

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

                               ESB-2010.0093
                New hybserv packages fix denial of service
                              1 February 2010

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

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

Product:           hybserv
Publisher:         Debian
Operating System:  Debian GNU/Linux 5
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-0303  

Original Bulletin: 
   http://www.debian.org/security/2010/dsa-1982

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running hybserv check for an updated version of the software for 
         their operating system.

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- - ------------------------------------------------------------------------
Debian Security Advisory DSA-1982-1                  security@debian.org
http://www.debian.org/security/                      Steffen Joeris
January 29, 2010                      http://www.debian.org/security/faq
- - ------------------------------------------------------------------------

Package        : hybserv
Vulnerability  : denial of service
Problem type   : remote
Debian-specific: no
CVE Id         : CVE-2010-0303
Debian Bug     : 550389


Julien Cristau discovered that hybserv, a daemon running IRC services
for IRCD-Hybrid, is prone to a denial of service attack via the commands
option.


For the stable distribution (lenny), this problem has been fixed in
version 1.9.2-4+lenny2.

Due to a bug in the archive system, it is not possible to release the
fix for the oldstable distribution (etch) simultaneously. Therefore,
etch will be fixed in version 1.9.2-4+etch1 as soon as it becomes
available.

For the testing distribution (squeeze), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in
version 1.9.2-4.1.


We recommend that you upgrade your hybserv packages.


Upgrade instructions
- - --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 5.0 alias lenny
- - --------------------------------

Debian (stable)
- - ---------------

Stable updates are available for alpha, amd64, arm, armel, hppa, i386, ia64, 
mips, mipsel, powerpc, s390 and sparc.

Source archives:

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2.orig.tar.gz
    Size/MD5 checksum:   418829 b0ebd0027c2b858ef8db6f06ac0d284b
  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2.dsc
    Size/MD5 checksum:     1000 1e53e47576f3165f8dff86114b5fbf9d
  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2.diff.gz
    Size/MD5 checksum:    12958 5af569d594f3208c96a3e02ee84ec4ba

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_alpha.deb
    Size/MD5 checksum:   237022 019c98668edd92146beb14cafe275e1d

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_amd64.deb
    Size/MD5 checksum:   231134 19d0a065dce4f37dba188c114d0d9a23

arm architecture (ARM)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_arm.deb
    Size/MD5 checksum:   212804 71c8f8d108effc0576f58cd4f4397d9a

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_hppa.deb
    Size/MD5 checksum:   233400 ec2a527b697dcf1be0c80b3a2622fa42

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_i386.deb
    Size/MD5 checksum:   210102 3e6afd1df128671cf09fb5ccc0ad475b

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_ia64.deb
    Size/MD5 checksum:   308362 57b37a7aad8fbdcf803086dc4284798c

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_mipsel.deb
    Size/MD5 checksum:   227240 159f0509fdf4bb3287cdbb4d3fe6415a

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_powerpc.deb
    Size/MD5 checksum:   229634 88cdd43d25c11741f33700518a13e16b

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/h/hybserv/hybserv_1.9.2-4+lenny2_s390.deb
    Size/MD5 checksum:   222108 92f96bb22103eac2d1a0f6787329f95f


  These files will probably be moved into the stable distribution on
  its next update.

- - ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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This security bulletin is provided as a service to AusCERT's members.  As
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        http://www.auscert.org.au/render.html?cid=1980

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any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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 member emergencies only.
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