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Debian Security Advisory DSA-1464-1                  security@debian.org
http://www.debian.org/security/                       Moritz Muehlenhoff
January 15, 2008                      http://www.debian.org/security/faq
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Package        : syslog-ng
Vulnerability  : null pointer dereference
Problem type   : local
Debian-specific: no
CVE Id(s)      : CVE-2007-6437

Oriol Carreras discovered that syslog-ng, a next generation logging
daemon can be tricked into dereferencing a NULL pointer through
malformed timestamps, which can lead to denial of service and the
disguise of an subsequent attack, which would otherwise be logged.

For the unstable distribution (sid), this problem has been fixed in
version 2.0.6-1.

For the stable distribution (etch), this problem has been fixed in
version 2.0.0-1etch1.

The old stable distribution (sarge) is not affected.

We recommend that you upgrade your syslog-ng package.

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 4.0 (stable)
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Stable updates are available for alpha, amd64, arm, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

Source archives:

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1.dsc
    Size/MD5 checksum:      630 0c4d7f9fe291909962a6b5ef92eca5e4
  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0.orig.tar.gz
    Size/MD5 checksum:   346056 6ea55c647dcbd3d58a58b8d90f7ea300
  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1.diff.gz
    Size/MD5 checksum:    10487 a1411ff4c12a79a915ba7e27d9ce79ba

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_alpha.deb
    Size/MD5 checksum:   216072 c1eb157b2bd909ee23c7443b602b5446

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_amd64.deb
    Size/MD5 checksum:   199956 393ba6fe859eb97fea6bbe95fdafc54f

arm architecture (ARM)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_arm.deb
    Size/MD5 checksum:   182992 5566905c2821adc329617626eae19b5c

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_hppa.deb
    Size/MD5 checksum:   204112 c3d2f3d7f4878330f70cd7842c8e6bc1

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_i386.deb
    Size/MD5 checksum:   177118 cfe45722a293c23a72b6791f1ac30549

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_ia64.deb
    Size/MD5 checksum:   271682 fbd2a41a0d894a261ac44d5d6ed28208

mips architecture (MIPS (Big Endian))

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_mips.deb
    Size/MD5 checksum:   203130 92d7ec89d158491a80629f8a75a3f8cb

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_mipsel.deb
    Size/MD5 checksum:   203422 56cfd580b06ee59a92121cd8a17c52f3

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_powerpc.deb
    Size/MD5 checksum:   189374 01053f541ef4eb99dcfe7023e4f0e7fb

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_s390.deb
    Size/MD5 checksum:   201736 9921207160c7d67b7f0cf5b8571054c7

sparc architecture (Sun SPARC/UltraSPARC)

  http://security.debian.org/pool/updates/main/s/syslog-ng/syslog-ng_2.0.0-1etch1_sparc.deb
    Size/MD5 checksum:   176494 327ce3c41678d0a54f4d37e97ef9d411


  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