Articles / Debian: New ident2 packages…

Debian: New ident2 packages fix buffer overflow

Jack discovered a buffer overflow in ident2, an implementation of the ident protocol (RFC1413), where a buffer in the child_service function was slightly too small to hold all of the data which could be written into it. This vulnerability could be exploited by a remote attacker to execute arbitrary code with the privileges of the ident2 daemon (by default, the "identd" user). Fixed packages are available from security.debian.org.
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Debian Security Advisory DSA 494-1                     security@debian.org
http://www.debian.org/security/                             Matt Zimmerman
April 21st, 2004                        http://www.debian.org/security/faq
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Package        : ident2
Vulnerability  : buffer overflow
Problem-Type   : remote
Debian-specific: no
CVE Ids        : CAN-2004-0408

Jack  discovered a buffer overflow in
ident2, an implementation of the ident protocol (RFC1413), where a
buffer in the child_service function was slightly too small to hold
all of the data which could be written into it.  This vulnerability
could be exploited by a remote attacker to execute arbitrary code with
the privileges of the ident2 daemon (by default, the "identd" user).

For the current stable distribution (woody) this problem has been
fixed in version 1.03-3woody1.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you update your ident2 package.

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 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1.dsc
      Size/MD5 checksum:      567 5d7dc1d91ad0402f3a1d5187316b1e35
    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1.diff.gz
      Size/MD5 checksum:     4337 8268cae2c5da094df3f0f0946254077c
    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03.orig.tar.gz
      Size/MD5 checksum:    38851 390a49dbaf636dad0d403ab2930bf1ae

  Alpha architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_alpha.deb
      Size/MD5 checksum:    18886 c33eb1df5912b54bd02804cd97e8c55b

  ARM architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_arm.deb
      Size/MD5 checksum:    17296 3b2f3534dc0e381390298d260ab2b1fb

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_i386.deb
      Size/MD5 checksum:    17360 4852458a942869e25ada58e21cbd9c79

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_ia64.deb
      Size/MD5 checksum:    20980 9a2d4173e0027822b840129bc85c9243

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_hppa.deb
      Size/MD5 checksum:    18322 c807f75a9b6feaebe6343f8e67f05a10

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_m68k.deb
      Size/MD5 checksum:    16988 b31160d7b3b65d644617f20099983b1f

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_mips.deb
      Size/MD5 checksum:    18016 7defb4d4f143d5665ed1037cd881864b

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_mipsel.deb
      Size/MD5 checksum:    18010 1d2e0e55ea87dfe1060c9ed016cd1162

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_powerpc.deb
      Size/MD5 checksum:    17420 96a3f097e14e383dee72c0f484f4dbf6

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_s390.deb
      Size/MD5 checksum:    18052 59b1bbbacaf402f41fa7bfca3004ac05

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/i/ident2/ident2_1.03-3woody1_sparc.deb
      Size/MD5 checksum:    19744 f69cb4c265466d23b852cbab06f06c4b

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

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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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