Debian alert: New wu-ftpd packages fix buffer overflow

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Debian Security Advisory 357-1                    security@debian.org
http://www.debian.org/security/                         Michael Stone
July 31, 2003                      http://www.debian.org/security/faq
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Package        : wu-ftpd
Vulnerability  : buffer overflow
Problem type   : remote root exploit
Debian-specific: no
CVE Id(s)      : CAN-2003-0466

iSEC Security Research reports that wu-ftpd contains an off-by-one bug
in the fb_realpath function which could be exploited by a logged-in user
(local or anonymous) to gain root privileges. A demonstration exploit is
reportedly available.

For the current stable distribution (woody) this problem has been fixed
in version 2.6.2-3woody1. 

For the unstable distribution (sid) an update will be available shortly.

We recommend you upgrade your wu-ftpd package immediately.

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 3.0 (stable)
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  Stable was released for alpha, arm, hppa, i386, ia64, m68k, mips, mipsel, powerpc, s390 and sparc.

  Source archives:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2.orig.tar.gz
      Size/MD5 checksum:   354784 b3c271f02aadf663b8811d1bff9da3f6
    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1.dsc
      Size/MD5 checksum:      713 0e7285b9fd050b4e8a30aa21d62f44d8
    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1.diff.gz
      Size/MD5 checksum:    99967 88c990894af29cce4d14ee6822069542

  Architecture independent packages:

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd-academ_2.6.2-3woody1_all.deb
      Size/MD5 checksum:     3476 79da608623ce421a11c568e97565f537

  alpha architecture (DEC Alpha)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_alpha.deb
      Size/MD5 checksum:   291540 20b379bd4495f8d810cc75f4188e0f94

  arm architecture (ARM)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_arm.deb
      Size/MD5 checksum:   265158 f5d590b10861f6f355d40d501cf35e75

  hppa architecture (HP PA RISC)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_hppa.deb
      Size/MD5 checksum:   275684 4cc9e3eb212401091d4f51ddf54dd771

  i386 architecture (Intel ia32)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_i386.deb
      Size/MD5 checksum:   255102 f79202c825c979fafd8de828401a8179

  ia64 architecture (Intel ia64)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_ia64.deb
      Size/MD5 checksum:   321168 30d2ce430f8ae75eabf76d9f2427f6cb

  m68k architecture (Motorola Mc680x0)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_m68k.deb
      Size/MD5 checksum:   249258 79367429ca9b917c99db373c205da8f8

  mips architecture (MIPS (Big Endian))

    Not yet available.

  mipsel architecture (MIPS (Little Endian))

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_mipsel.deb
      Size/MD5 checksum:   272916 ec410054275c42450c6eb983cfc3e6e6

  powerpc architecture (PowerPC)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_powerpc.deb
      Size/MD5 checksum:   268236 3e1954b334be827bdbbf43edb2336978

  s390 architecture (IBM S/390)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_s390.deb
      Size/MD5 checksum:   262914 448c89adf5f1eabfafa9b944719d34ba

  sparc architecture (Sun SPARC/UltraSPARC)

    http://security.debian.org/pool/updates/main/w/wu-ftpd/wu-ftpd_2.6.2-3woody1_sparc.deb
      Size/MD5 checksum:   270306 5d5126fbaf637dffc0224b5a9e402cd1

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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 <pkg>' and http://packages.debian.org/<pkg>

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