Debian: 2069-1: znc: denial of service
Posted by Benjamin D. Thomas   
Debian It was discovered that znc, an IRC bouncer, is vulnerable to denial of service attacks via a NULL pointer dereference when traffic statistics are requested while there is an unauthenticated connection. [More...]
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Debian Security Advisory DSA-2069-1                  security@debian.org
http://www.debian.org/security/                         Raphael Geissert
Jul 11, 2010                          http://www.debian.org/security/faq
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Package        : znc
Vulnerability  : denial of service
Problem type   : remote
Debian-specific: no
CVE Id(s)      : CVE-2010-2448
Debian Bug     : 584929

It was discovered that znc, an IRC bouncer, is vulnerable to denial
of service attacks via a NULL pointer dereference when traffic
statistics are requested while there is an unauthenticated connection.

For the stable distribution (lenny), the problem has been fixed in
version 0.058-2+lenny4.

For the testing distribution (squeeze) and the unstable distribution (sid),
the problem has been fixed in version 0.090-2.


We recommend that you upgrade your znc packages.


Upgrade instructions
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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 (stable) alias lenny
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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/z/znc/znc_0.058-2+lenny4.dsc
    Size/MD5 checksum:     1038 46f176d6370f395b9166832d839f667c
  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4.diff.gz
    Size/MD5 checksum:     9957 f83f0daa62de96ddd125a57e355997f7
  http://security.debian.org/pool/updates/main/z/znc/znc_0.058.orig.tar.gz
    Size/MD5 checksum:   340741 c02fd740c55d5b3a7912f7584344103e

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_alpha.deb
    Size/MD5 checksum:  1097004 aad70b861a881acc07b62fba1828a987

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_amd64.deb
    Size/MD5 checksum:  1028912 73e5648afac01653d63993c78f814166

arm architecture (ARM)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_arm.deb
    Size/MD5 checksum:  1151388 a75400496739ef59b8f04369c11adae1

armel architecture (ARM EABI)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_armel.deb
    Size/MD5 checksum:   964152 db8f9e2dd72860c5fc113cdf2d9ffa23

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_hppa.deb
    Size/MD5 checksum:  1164930 833ebba997cafa8d98de64f02af58257

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_i386.deb
    Size/MD5 checksum:  1012740 8e9428972501db9a05d6f8012a1b58c2

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_ia64.deb
    Size/MD5 checksum:  1183340 5ec39e62dde31f9198db0f34ec12b95d

mips architecture (MIPS (Big Endian))

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_mips.deb
    Size/MD5 checksum:   916252 c19f7c926422278d2fc29dc3999d837a

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_mipsel.deb
    Size/MD5 checksum:   907810 14096b5353a78f6966577c23773d218a

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_powerpc.deb
    Size/MD5 checksum:  1036902 dbd1e736e3fe1d8f5e9dddba22166279

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_s390.deb
    Size/MD5 checksum:   972040 2ea3615c32521cd15cc5eae7516f85f8

sparc architecture (Sun SPARC/UltraSPARC)

  http://security.debian.org/pool/updates/main/z/znc/znc_0.058-2+lenny4_sparc.deb
    Size/MD5 checksum:  1000438 8838f85e71e4d0057b21505c8fcb0b39


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

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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 ' and http://packages.debian.org/
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